HONDA MARINE BF4A Includes US And Canadian Models Owner’s Manual

: June 1, 2024
: HONDA MARINE

Table of Contents

HONDA MARINE BF4A Includes US And Canadian Models
Specifications
Product Usage Instructions
FAQs
INTRODUCTION
IMPORTANT SAFETY INFORMATION
CONTROLS AND FEATURES
INSTALLATION
OPERATION
MAINTENANCE SAFETY
SERVICING YOUR OUTBOARD MOTOR
CLEANING AND FLUSHING
STORAGE
TRANSPORTING
TAKING CARE OF UNEXPECTED PROBLEMS
TECHNICAL INFORMATION
CONSUMER INFORMATION
Read User Manual Online (PDF format)
Download This Manual (PDF format)

HONDA MARINE BF4A Includes US And Canadian Models

HONDA-MARINE-BF4A-Includes-US-And-Canadian-Models-
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Specifications

Model: Honda Outboard Motor
Manufacturer: Honda Motor Co., Ltd.
Country of Origin: USA and Canada
Engine Type: Gasoline-powered
Warranty: Refer to the warranty policy for details

Product Usage Instructions

Introduction

Congratulations on choosing a Honda outboard motor. This manual is a vital resource that should be kept with the outboard motor at all times. It provides essential information on operating your outboard motor safely and efficiently.

Safety Precautions

Prioritize safety when using the outboard motor. Familiarize yourself with the safety information provided in this manual to prevent accidents or injuries. Always follow the safety guidelines outlined to ensure safe operation.

Contents Overview

Outboard Motor Safety: Understand important safety information and locate safety labels on the outboard motor.
Indicators: Learn about oil pressure and cooling system indicators for monitoring the motor’s performance.
Before Operation: Check readiness before starting the outboard motor and ensure all necessary preparations are complete.
Servicing Your Outboard Motor: Maintenance guidelines and safety precautions for keeping your outboard motor in optimal condition.

Maintenance and Servicing

Regular maintenance is crucial for the longevity and performance of your outboard motor. Refer to the servicing section for detailed maintenance procedures and safety guidelines. Consult a Honda Marine dealer for scheduled maintenance to ensure proper servicing.

FAQs

Q: What should I do if I encounter a problem with my outboard motor?
- A: If you experience any issues with your outboard motor, refer to the troubleshooting section in the manual. If problems persist, contact your nearest Honda Marine dealer for assistance.

“`

Owner`s Manual
BF4A · BF5D · BF6A
Includes US and Canadian Models
© 2024 Honda Motor Co., Ltd. – All Rights Reserved

The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects
or other reproductive harm.
Keep this Owner’s Manual handy, so you can refer to it at any time. This Owner’s Manual is considered a permanent part of the outboard motor and should remain with the outboard motor if resold.
The information and specifications included in this publication were in effect at the time of approval for printing. Honda Motor Co., Ltd. reserves the right, however, to discontinue or change specifications or design at any time without notice and without incurring any obligation whatsoever. No part of this publication may be reproduced without written permission.

Congratulations on your selection of a Honda outboard motor. We are certain you will be pleased with your purchase of one of the finest outboard motors on the market.
We want to help you get the best results from your new outboard motor and to operate it safely. This manual contains information on how to do that; please read it carefully.
As you read this manual you will find information preceded by a

We suggest you read the warranty policy to fully understand its coverage and your responsibilities of ownership (see page 112).
When your outboard motor needs scheduled maintenance, keep in mind that your Honda Marine dealer is specially trained in servicing Honda outboard motors. Your Honda Marine dealer is dedicated to your satisfaction and will be pleased to answer your questions and concerns.

symbol. That information is intended to help you avoid damage to your outboard motor, other property, or the environment.

INTRODUCTION

A FEW WORDS ABOUT SAFETY
Your safety and the safety of others are very important. And using this outboard motor safely is an important responsibility.
To help you make informed decisions about safety, we have provided operating procedures and other information on labels and in this manual. This information alerts you to potential hazards that could hurt you or others.
Of course, it is not practical or possible to warn you about all the hazards associated with operating or maintaining an outboard motor. You must use your own good judgment.

You will find important safety information in a variety of forms, including:
· Safety Labels on the outboard motor.
· Safety Messages preceded by a safety alert symbol and one of three signal words, DANGER, WARNING , or CAUTION.
These signal words mean: You WILL be KILLED or SERIOUSLY HURT if you don’t follow instructions. You CAN be KILLED or SERIOUSLY HURT if you don’t follow instructions. You CAN be HURT if you don’t follow instructions.
· Safety Headings such as IMPORTANT SAFETY INFORMATION.
· Safety Section such as OUTBOARD MOTOR SAFETY.
· Instructions how to use this outboard motor correctly and safely.

This entire book is filled with important safety information please read it carefully.

OUTBOARD MOTOR SAFETY

IMPORTANT SAFETY INFORMATION

The Honda BF4A, BF5D and BF6A outboard motors are designed for use with boats that have a suitable manufacturer’s power recommendation. Other uses can result in injury to the operator or damage to the outboard motor and other property.
Most injuries or property damage can be prevented if you follow all instructions in this manual and on the outboard motor. The most common hazards are discussed in this chapter, along with the best way to protect yourself and others.

Operator Responsibility
· It is the operator’s responsibility to provide the necessary safeguards to protect people and property. Know how to stop the engine quickly in case of emergency. Understand the use of all controls.
· Stop the engine immediately if anyone falls overboard, and do not run the engine while the boat is near anyone in the water.
· Always stop the engine if you must leave the controls for any reason.

· Attach the emergency stop switch lanyard securely to the operator.
· Always wear a PFD (Personal Flotation Device) while on the boat.
· Familiarize yourself with all laws and regulations relating to boating and the use of outboard motors.
· Be sure that anyone who operates the outboard motor receives proper instruction.
· Be sure the outboard motor is properly mounted on the boat.
· Do not remove the engine cover while the engine is running.

OUTBOARD MOTOR SAFETY

Refuel With Care
· Gasoline is extremely flammable, and gasoline vapor can explode. Refuel outdoors, in a well-ventilated area, with the engine stopped. Never smoke near gasoline, and keep other flames and sparks away.
· Remove any portable fuel tank from the boat for refueling. Keep the portable fuel tank away from the battery or other potential spark sources.
· Refuel carefully to avoid spilling fuel. Avoid overfilling the fuel tank.
· After refueling, tighten the filler cap securely. If any fuel is spilled, make sure the area is dry before starting the engine.

Carbon Monoxide Hazard
Exhaust contains poisonous carbon monoxide, a colorless, odorless gas. Breathing carbon monoxide can cause loss of consciousness and may lead to death.
If you run the engine in an area that is confined, or even partly enclosed, the air you breathe could contain a dangerous amount of exhaust gas.
Never run your outboard inside a garage or other enclosure.

Running the engine of your outboard while in an enclosed or partially enclosed area can cause a rapid build-up of toxic carbon monoxide gas.
Breathing this colorless, odorless gas can quickly cause unconsciousness and lead to death.
Only run your outboard engine when it is located in a well ventilated area outdoors.

OUTBOARD MOTOR SAFETY
SAFETY LABEL LOCATIONS
US, Puerto Rico, and US Virgin Islands Types
8

CAUTION
KEEP TOTALLY CLOSED WHEN NOT IN USE. KEEP AWAY FROM HEAT, SPARKS, AND OPEN FLAME. SECURE ABOVE DECK IN WELL VENTILATED AREA. DO NOT USE FOR LONG TERM FUEL STORAGE.
DO NOT USE FUEL/OIL MIXTURE.
GASOLINE FLAMMABLE DANGER

OUTBOARD MOTOR SAFETY

PORTABLE FUEL TANK

FUEL CAUTION

DANGER
HARMFUL OR FATAL IF SWALLOWED. KEEP OUT OF REACH OF CHILDREN.
IF SWALLOWED, DO NOT INDUCE VOMITING. CALL A PHYSICIAN IMMEDIATELY.
GASOLINE FLAMMABLE DANGER

FUEL CAUTION
The labels shown here contain important safety information. Please read them carefully. These labels are considered permanent parts of your outboard motor. If a label comes off or becomes hard to read, contact an authorized Marine dealer for a replacement.
9

OUTBOARD MOTOR SAFETY
Canadian Types
10

OUTBOARD MOTOR SAFETY
PORTABLE FUEL TANK FUEL CAUTION
DANGER
HARMFUL OR FATAL IF SWALLOWED. KEEP OUT OF REACH OF CHILDREN.
IF SWALLOWED, DO NOT INDUCE VOMITING. CALL A PHYSICIAN IMMEDIATELY.
GASOLINE FLAMMABLE DANGER GAZOLINE INFLAMMABLE DANGEREUX

OUTBOARD MOTOR SAFETY

US, Puerto Rico, and US Virgin Islands Types

· Do not overfill the fuel tank. After refueling make sure that the fuel filler cap is closed properly and securely.
· Be careful not to spill any fuel while refueling. Spilled fuel or fuel vapor may ignite. If any fuel is spilled, make sure that the area is dry before starting the engine.

· Gasoline is harmful or fatal if swallowed. Keep the fuel tank out of reach of children.
· Gasoline is extremely flammable and is explosive under certain conditions. Refuel in a well-ventilated area with the engine stopped.
· Do not smoke or allow flames or sparks where the engine is refueled or where gasoline is stored.
12

Canadian Types
· Honda outboard motor is designed to give safe and dependable service if operated according to instructions. Read and understand the Owner’s Manual before operating the outboard motor. Failure to do so could result in personal injury or equipment damage.

OUTBOARD MOTOR SAFETY

CONTROLS AND FEATURES

CONTROL AND FEATURE IDENTIFICATION CODES

Model Type Shaft Length S
L Fuel Tank (Internal fuel tank) Charging System

BF4A

BF5D

BF6A

SHN LHN SHN

LHN

SHN

LHN

Refer to this chart for an explanation of the Type Codes used in this manual to identify control and feature applications. For the detailed equipment conditions of optional components, consult your Honda dealer.

BF4A/BF5D/BF6A are provided with the following types according to the shaft length and charging system.

· Shaft Length S: Short Shaft L: Long Shaft
· Control System H: Tiller Handle Type
· Charging System N: Without System (Optional Equipment)

(Example) SHN

Destination
Charging System N=Without System
(Optional Equipment) Throttle Type H=Tiller Handle Type Shaft Length S=Short Shaft L=Long Shaft

CONTROLS AND FEATURES

COMPONENT AND CONTROL LOCATIONS

GEARSHIFT LEVER FUEL FILLER CAP VENT KNOB

ENGINE COVER

FUEL FILLER CAP STARTER GRIP

TILLER HANDLE

THROTTLE

GRIP

FRICTION KNOB

OIL FILLER CAP/DIPSTICK
SPARK PLUG
ENGINE COVER LATCH

COOLING SYSTEM INDICATOR
TILT LEVER
TRANSOM ANGLE ADJUSTING ROD

HANDLE STOPPER FUEL VALVE LEVER
STEERING FRICTION BOLT CLAMP SCREW
STERN BRACKET
GEAR OIL LEVEL SCREW

ENGINE OIL DRAIN BOLT
WASH SCREW (FLUSH SCREW)
ANODE

ANTIVENTILATION PLATE
PROPELLER

WATER INTAKE PORT (each side)

EXHAUST PORT
GEAR OIL DRAIN/FILL SCREW
15

CONTROLS AND FEATURES

OIL PRESSURE

FUEL HOSE INDICATOR

CONNECTOR (MALE) (BF5D and

EMERGENCY STOP SWITCH

BF6A only)

Portable Fuel Tank (standard or optionally applicable equipment)

VENT KNOB

PORTABLE FUEL TANK

FUEL HOSE CONNECTOR CAP (BF5D and BF6A only)

CHOKE KNOB

EMERGENCY STOP SWITCH

EMERGENCY STOP LANYARD

SWITCH CLIP BATTERY

CHARGE CABLE

(equipped type)

FUEL FILLER CAP FUEL HOSE

FUEL PRIMING BULB
FUEL HOSE CONNECTOR (FEMALE)

CONTROLS Emergency Stop Switch Clip and Emergency Stop Switch
EMERGENCY EMERGENCY STOP STOP SWITCH SWITCH LANYARD
PUSH
EMERGENCY STOP SWITCH CLIP

EMERGENCY STOP SWITCH CLIP

CONTROLS AND FEATURES
Choke Knob
CHOKE KNOB

EMERGENCY STOP SWITCH LANYARD

The emergency stop switch clip must be inserted in the emergency stop switch in order for the engine to start and run. The emergency stop switch lanyard must be attached securely to the operator or to the PFD (Personal Flotation Device) equipped to an operator.
When used as described, the emergency stop switch and emergency stop switch lanyard system stops the engine if the operator falls away from the controls.
A spare emergency stop switch clip is supplied with the tool kit.

OFF ON
The choke knob opens and closes the choke valve in the carburetor.
The ON position enriches the fuel mixture for starting a cold engine.
The OFF position provides the correct fuel mixture for operation after starting, and for restarting a warm engine.
The choke knob is also used to restart the engine after supplying fuel when the internal fuel tank is out of fuel. For more information, refer to page 44.
17

CONTROLS AND FEATURES

Throttle Grip
INDEX MARK SLOW

FAST THROTTLE GRIP

[USA model] [Canadian model]

FAST

SLOW

The throttle grip controls engine speed.

Throttle Friction Knob

An index mark on the tiller handle shows throttle position and is helpful for setting the throttle correctly when starting (p. 44).

TO INCREASE FRICTION

TO DECREASE FRICTION

THROTTLE FRICTION KNOB
The throttle friction knob adjusts resistance to throttle grip rotation.

Turn the knob clockwise to increase friction for holding a throttle setting while cruising.

Turn the knob counterclockwise to decrease friction for easy throttle grip rotation.

Gearshift Lever

N (neutral)

R (reverse)

F (forward)

GEARSHIFT LEVER

CONTROLS AND FEATURES

[USA model] N (neutral)

R (reverse)

F (forward)

[Canadian model] N (neutral)

Fuel Valve Lever
FUEL VALVE LEVER
ON (BF4A) or INTERNAL FUEL TANK POSITION (BF5D and BF6A)
OFF (BF4A) or PORTABLE FUEL TANK POSITION (BF5D and BF6A)

R (reverse) F (forward)
The gearshift lever is used to select F (forward), N (neutral), or R (reverse) gears.
If the gearshift lever is in the F (forward) or R (reverse) position, the recoil starter will not operate.
19

CONTROLS AND FEATURES

[BF4A] OFF
ON [BF5D and BF6A] PORTABLE FUEL TANK POSITION

(BF4A)
The fuel valve opens and closes the passage between the internal fuel tank and the carburetor.
The fuel valve lever must be in the ON position for the engine to run.
When the engine is not in use, leave the fuel valve lever in the OFF position to prevent carburetor flooding and to reduce the possibility of fuel leakage.

(BF5D and BF6A)
The fuel valve lever has internal fuel tank position and portable fuel tank position.
When using the internal fuel tank, turn the fuel valve lever to the internal fuel tank position.
When not connecting the portable fuel tank, fuel is shut off at the portable fuel tank position.
When using the portable fuel tank, turn the fuel valve lever all the way to the portable fuel tank position.

INTERNAL FUEL TANK POSITION

(BF4A)

LEVER POSITION ON
OFF

CONTROLS AND FEATURES

FUNCTION Fuel from the internal fuel tank is supplied.

Fuel Filler Cap Vent Knob (Internal Fuel Tank)

Fuel supply is shut off. Set the fuel valve lever to the “OFF” position during transporting or storing the outboard motor.

OPEN

CLOSE VENT KNOB

(BF5D and BF6A)
LEVER POSITION INTERNAL FUEL TANK
PORTABLE FUEL TANK

FUNCTION Fuel from the internal fuel tank is supplied.
· Fuel from the portable fuel tank is supplied.
· If the portable fuel tank is not connected, fuel supply is shut off. Set the fuel valve lever to the “PORTABLE FUEL TANK” position during transporting or storing the outboard motor.

FUEL FILLER CAP
The fuel filler cap is provided with a vent knob to seal the fuel tank. Open the vent by turning the vent knob counterclockwise all the way before starting the engine. Close the vent by turning the vent knob clockwise all the way after stopping the engine.

CONTROLS AND FEATURES

Starter Grip

Engine Cover Latch

Direction to pull

UNLOCK

Transom Angle Adjusting Rod
The transom angle adjusting rod adjusts the transom angle of the outboard motor when fully lowered.

STARTER GRIP
Pulling the starter grip operates the recoil starter to crank the engine for starting.
The “Neutral Starting System” prevents the starter rope from being pulled out for starting the engine unless the gearshift lever (P.19) is set in the N (neutral) position.
The engine will start only when the emergency stop switch clip is in the emergency stop switch.
22

ENGINE COVER LATCH
The engine cover latch fastens the engine cover to the outboard motor.
Do not remove the engine cover while the engine is running.

TRANSOM ANGLE ADJUSTING ROD
Proper adjustment prevents the outboard motor from being adjusted too low (p. 55).

Steering Friction Bolt

Tilt Lever
ENGINE COVER GRIP

CONTROLS AND FEATURES
Handle Stopper
TILLER HANDLE

TO INCREASE FRICTION

TO DECREASE FRICTION

STEERING FRICTION BOLT
The steering friction bolt adjusts steering resistance.
Less friction allows the outboard motor to turn more easily. More friction helps to hold a steady course while cruising or to prevent the outboard motor from swinging while trailering the boat.

TILT LEVER
The tilt lever enables the outboard motor to be raised for shallow water operation, beaching, launching, or mooring.
To tilt, raise the outboard motor by pulling on the engine cover grip until the tilt mechanism engages at 18°, 34°, or 58° (p. 56 and 57).

HANDLE STOPPER
The tiller handle can be moved to the bottom direction by turning the handle stopper.
23

CONTROLS AND FEATURES

INDICATORS
Oil Pressure Indicator
OIL PRESSURE INDICATOR

If oil pressure becomes low, the oil pressure indicator will go off, and the engine protection system will limit engine speed. Refer to TAKING CARE OF UNEXPECTED PROBLEMS, p. 97.
Low oil pressure indicates that the engine oil level is low or that there is a problem with the engine lubrication system.

When the oil pressure indicator is lit, oil pressure is OK.

Cooling System Indicator
COOLING SYSTEM INDICATOR
Water should flow from the cooling system indicator while the engine is running. This shows that water is circulating through the cooling system. If water stops flowing while the engine is running, that indicates a cooling system problem, such as clogged water intakes, which will cause engine overheating.

CONTROLS AND FEATURES

OTHER FEATURES Rev Limiter

Anode

ANODE

The engine is equipped with a rev limiter to prevent the possibility of mechanical damage from excessive engine speed.

The rev limiter may be activated during operation, limiting engine speed, if the outboard motor is tilted excessively, or when propeller ventilation occurs during a sharp turn.

If the rev limiter is activated, check the tilt angle of the outboard motor.
Improper propeller selection may also cause the rev limiter to activate.
Check to see if the correct propeller is installed.

The anode is made of a sacrificial material that helps to protect the outboard motor from corrosion.
There is an anode on the antiventilation plate.

CONTROLS AND FEATURES

Fuel Hose Connector Cap and Fuel Hose Connector (Male) (BF5D and BF6A only)
FUEL HOSE CONNECTOR (MALE)

Portable Fuel Tank (standard or optionally applicable equipment)

Fuel Filler Cap Vent Knob (standard or optionally applicable equipment)
VENT KNOB
OPEN

FUEL HOSE CONNECTOR CAP
Use the fuel hose connector (male) to attach the portable fuel tank (standard or optionally applicable equipment).
Always install the fuel hose connector cap if the fuel hose connector (female) is not connected. Be sure the fuel hose connector cap is securely installed.

FUEL HOSE (standard equipment)
The portable fuel tank has a capacity of 3.2 US gal (12 L, 2.6 Imp gal).

FUEL FILLER CAP
The fuel filler cap is provided with a vent knob to seal the portable fuel tank for carrying it to and from the boat. Open the vent by turning the vent knob counterclockwise all the way before starting the engine. Close the vent by turning the vent knob clockwise all the way after stopping the engine.

CONTROLS AND FEATURES

Fuel Priming Bulb (standard or optionally applicable equipment)
UP
OUTLET END (outboard motor side)

Battery Charge Cable
The battery charge cable is included in the battery charge cable kit (equipped type).
When removing the outboard motor or storing it for long periods, you can remove the battery charge cable from the outboard motor.

PRIMING BULB

If the battery charge cable kit is attached, you must attach the battery. (page 32)

BATTERY CHARGE CABLE

INLET END (portable fuel tank side)

A priming bulb is built into the fuel hose that connects the portable fuel tank to the outboard motor.
Before starting the engine, hold the priming bulb up in the direction of the arrow, then squeeze the priming bulb until it feels firm. This will ensure that fuel is supplied to the engine.
27

CONTROLS AND FEATURES

Battery Charge Cable Connection
1. Remove the covers off the charging connector and the battery charge cable connector, and save them in a secure place for later use if necessary.
2. Connect the battery charge cable connector to the charging receptacle connector.
3. Attach the wire band as shown in the figure.

WIRE BAND (1) PULL
WIRE BAND CHARGING RECEPTACLE CONNECTOR

BATTERY CHARGE CABLE
BATTERY CHARGE CABLE CONNECTOR

Starting the engine with the battery charge cable not securely connected to a battery may cause a spark if the cable terminals touch one another or a metal surface. Do not start the engine if the battery charge cable is connected to the outboard, but not connected to a battery (p. 32).

CHARGING RECEPTACLE CONNECTOR

COVER

COVER BATTERY CHARGE CABLE CONNECTOR

Disconnecting Battery Charge Cable
1. Steer the tiller handle to the left with respect to the boat.
TILLER HANDLE

WIRE BAND TAB (1) PULL
WIRE BAND

(2) PULL

CONTROLS AND FEATURES
BATTERY CHARGE CABLE

WIRE BAND

2. Remove the wire band by pulling the wire band tab in the direction shown and remove the wire band.
3. While pressing the lock on the connector, remove the battery charge cable connector from the charging receptacle connector.
4. Install the covers.

CHARGING RECEPTACLE CONNECTOR

COVER

BATTERY CHARGE CABLE CONNECTOR

(2) PULL (1) PUSH
BATTERY CHARGE CABLE CONNECTOR

COVER BATTERY CHARGE CABLE CONNECTOR

INSTALLATION

Correct and secure installation is essential for safe boating and good performance. Follow the installation instructions provided in this manual.
POWER REQUIREMENTS
Before installation, check to be sure that the outboard motor does not exceed the recommended maximum horsepower for the boat on which it is to be installed. Refer to the boat’s certification plate for recommended maximum horsepower. If the certification plate information is not available, contact the boat dealer or manufacturer.
For most applications, the outboard motor should have a horsepower rating which provides 80% of the maximum recommended horsepower for the boat.

INSTALLATION POSITION
CENTER LINE
Install the outboard motor on the center of the boat transom. The antiventilation plate of the outboard motor should be 0 2 in (0 50 mm) below the bottom of the boat. The correct dimensions differ according to the type of boat and the configuration of the bottom of the boat. Follow the manufacturer’s recommended installation height.

OUTBOARD MOTOR TRANSOM HEIGHT

BOAT TRANSOM HEIGHT

IDLE PORT

ANTIVENTILATION PLATE

0 2 in (0 50 mm)

Type:
S: L:

Outboard Motor Transom Height 17.1 in (434 mm) 22.1 in (561 mm)

When the outboard motor is installed extremely low, the idle port may be immersed and the engine may become hard to start or may run poorly. Check that the idle port is high enough from the water level when the engine is stopped with the boat fully loaded.

INSTALLATION

If the outboard motor is installed too low, the boat will squat and be hard to plane, and the outboard motor will spray water that may enter the boat. It will tend to bounce, and high-speed stability will be reduced.
If the outboard motor is installed too high, that will cause propeller ventilation.
Optimum installation height varies with boat type and bottom shape. Contact the boat manufacturer for any special recommendations that are unique to a specific model of boat.
If the transom needs to be modified to accommodate the outboard motor, contact the boat manufacturer and follow their recommendations for corrective action.

ATTACHMENT

STERN BRACKET

SAFETY ROPE

CLAMP SCREWS

Attach the stern bracket to the boat transom by tightening the clamp screws.

Attach a rope from the boat to the hole in the stern bracket. This will help to prevent accidental loss of the outboard motor.

TRANSOM ANGLE ADJUSTMENT
Use the transom angle adjusting rod (p. 37) to adjust the angle of the outboard motor so the propeller is perpendicular to the surface of the water.

INSTALLATION
BATTERY CONNECTIONS
The battery contains sulfuric acid (electrolyte), which is highly corrosive and poisonous.
Getting electrolyte in your eyes or on your skin can cause serious burns.
Wear protective clothing and eye protection when working near the battery.
KEEP CHILDREN AWAY FROM THE BATTERY.

– TO ACCESSORIES
BATTERY CHARGE CABLE BATTERY
An optional accessory charging kit is available for Honda BF4A, BF5D, and BF6A outboard motors and can produce a 12-volt, 6-ampere battery charging current to charge a 12-volt battery. The battery charging circuit is protected by a 15-ampere fuse.
The outboard motor’s optional accessory 12-volt charge kit is designed to charge a “starting or cranking” type battery only. It is not intended to charge a “deep-cycle” type battery. Lights and electrical accessories for the boat should be connected to the battery.

The battery should be kept in a corrosion-resistant battery box that is securely mounted in a location away from the fuel tank and protected from water and direct sunlight.
Battery
For complete information, refer to the battery manufacturer’s instructions. Minimum Requirements 12V-28Ah/5HR (CCA 265)

INSTALLATION

Battery Terminals
(+) BATTERY TERMINAL RED TERMINAL COVER
() BATTERY TERMINAL
BLACK TERMINAL COVER
WARNING: Battery posts, terminals, and related accessories contain lead and lead compounds. Wash hands after handling.
Connect the positive (+) battery cable (red terminal cover) to the positive (+) battery terminal, then connect the negative (-) battery cable (black terminal cover) to the negative (-) battery terminal.

The negative (-) battery cable should always be removed from the battery before connecting or disconnecting the positive (+) battery cable, so tools cannot cause a short circuit if they touch a grounded part while being used on the positive (+) battery terminal fitting.

· Be careful to avoid connecting the battery in reverse polarity, as this will damage the battery-charging system in the outboard motor.
· Do not disconnect the battery cables while the engine is running. Disconnecting the cables while the engine is running will damage the outboard motor’s electrical system.
· Battery cable extension: Extending the original battery cable will cause the battery voltage to drop due to the increased length of the cable and number of connections. The outboard may not start if the battery voltage reaching the engine is too low.

BEFORE OPERATION

ARE YOU READY TO GET UNDERWAY?
Your safety is your responsibility. A little time spent in preparation will significantly reduce your risk of injury.
Knowledge
Read and understand this manual. Know what the controls do and how to operate them.
Familiarize yourself with the outboard motor and its operation before you get underway. Know what to do in case of an emergency.
Familiarize yourself with all laws and regulations relating to boating and the use of outboard motors.

Safety
Always wear a PFD (Personal Flotation Device) while on the boat.
Attach the emergency stop switch lanyard securely to the operator or to the PFD worn by the operator.
IS YOUR OUTBOARD MOTOR READY TO GO?
For your safety, and to maximize the service life of your equipment, it is very important to take a few moments before you operate the outboard motor to check its condition. Be sure to take care of any problem you find, or have your authorized Marine dealer correct it, before you operate the outboard motor.

Failure to properly maintain this outboard motor, or failing to correct a problem before operation, could result in a significant malfunction.
Some malfunctions can cause serious injuries or death.
Always perform a pre-operation inspection before each operation and correct any problems.
Before beginning your pre-operation checks, be sure the emergency stop switch clip is removed from the emergency stop switch.

BEFORE OPERATION

Safety Inspection
· Before each use, look around and underneath the engine for signs of oil or gasoline leaks.
· If you are using the portable fuel tank, make sure it is in good condition and properly secured in the boat (p. 39).
· If you are using the portable fuel tank, check that the fuel hose is undamaged and properly connected (p. 39).
· Wipe up any spills before starting the engine.
· Check the stern bracket to be sure the outboard motor is securely installed.
· Check that all controls are operating properly.
· Replace any damaged parts.

· Check that all fasteners are in place and securely tightened.
· Check the emergency stop switch for proper operation (p. 17, 41). Start the engine (p. 41). Make sure the engine stops by pulling the emergency stop switch clip from the emergency stop switch (p. 51).
Maintenance Inspection
· Check the engine oil level (p. 64). Running the engine with a low oil level can cause engine damage.
· Check to be sure the propeller and shear pin are undamaged (p. 79).
· Check that the anode is securely attached to the antiventilation plate (p. 78) and is not excessively worn. The anode helps to protect the outboard motor from corrosion.

· Make sure the tool kit and emergency starter rope are onboard (p. 60). Replace any missing items.
· Check the fuel level in the fuel tank (p. 71).
· If you are using the battery, check that the battery fluid is between the upper and lower levels, and the battery leads are connected securely.

OPERATION
SAFE OPERATING PRECAUTIONS
To safely realize the full potential of this outboard motor, you need a complete understanding of its operation and a certain amount of practice with its controls.
Before operating the outboard motor for the first time, please review the IMPORTANT SAFETY INFORMATION on page 6 and the chapter titled BEFORE OPERATION.
For your safety, do not start or run the engine in a confined or partly enclosed area. Your engine’s exhaust contains poisonous carbon monoxide, a colorless, odorless gas that can collect rapidly. Breathing carbon monoxide can cause loss of consciousness and may lead to death.

Exhaust contains poisonous carbon monoxide gas that can build up to dangerous levels in closed areas.
Breathing carbon monoxide can cause unconsciousness or death.
Never run this product’s engine in a closed, or even partially closed area.

BREAK-IN PROCEDURE
Proper break-in procedure allows the moving parts to wear in smoothly for best performance and long service life.
· First 15 minutes: Run the outboard motor at trolling speed. Use the minimum amount of throttle opening necessary to operate the boat at a safe trolling speed.
· Next 45 minutes: Run the outboard motor up to a maximum of 10% to 30% throttle opening.
· Next 60 minutes: Run the outboard motor up to maximum of 50% to 80% throttle opening. Short bursts of full throttle are acceptable but do not operate the outboard motor continuously at full throttle.
· Next 8 hours: Avoid continuous full throttle operation (100% throttle opening). Do not run the outboard motor at full throttle for more than 5 minutes at a time.

OPERATION

TRANSOM ANGLE ADJUSTMENT
TRANSOM ANGLE ADJUSTING ROD

TO CHANGE

UNLOCKED POSITION

TO LOCK

LOCKED POSITION

The transom angle adjusting rod is used to adjust the angle of the outboard motor in the normal operating position (p. 55).
1. To adjust, first tilt the outboard motor so it is not resting on the rod.
2. Push the rod in and turn the end of the rod up, so the latch will fall into line with the rod.
3. Remove the rod and reinsert it in the desired position.
4. Push the rod in and turn the end of the rod down, so the latch will fall to the locked position. Then release the rod.

PRIMING THE CARBURETOR WITH GASOLINE (When using the internal fuel tank)
When starting the engine for the first time, or when starting the engine after the carburetor has been drained, the carburetor must be primed with gasoline before the engine will start. To prime the carburetor, remove the emergency stop switch clip from the outboard motor, and then pull the starter grip about 10 times.
If you do not fill fuel to the upper level of the internal fuel tank, fuel loading to the carburetor may be insufficient.

OPERATION
OPEN

[BF4A]

N (neutral)

VENT KNOB
1. Fill the tank to the maximum fuel level (p.71).
2. Turn the internal fuel tank vent knob counterclockwise to the open position (p. 21).
FUEL VALVE LEVER
ON (BF4A) or INTERNAL FUEL TANK POSITION (BF5D and BF6A)
38

ON [BF5D and BF6A] INTERNAL FUEL TANK POSITION
3. Turn the fuel valve lever to the ON position (BF4A) or internal fuel tank position (BF5D and BF6A) (p. 19).

GEARSHIFT LEVER
[USA model] N (neutral)
[Canadian model] N (neutral)

4. Check the position of the gearshift lever. It must be in the N (neutral) position for starting.
The recoil starter will not operate if the gearshift lever is in the F (forward) or R (reverse) position.
Direction to pull

PORTABLE FUEL TANK (standard or optionally applicable equipment)
[When using the portable fuel tank]

OPERATION
To ensure that the outboard motor will be able to draw fuel from the tank, place the tank within 6 feet (2 m) of the outboard motor and not more than 3 feet (1 m) below the fuel connector on the outboard motor.
Secure the portable fuel tank in the boat so that it won’t move around and become damaged.

STARTER GRIP
5. Pull the starter grip about 10 times. Return the starter grip gently.

FUEL HOSE (standard equipment)
Place the portable fuel tank in a well-ventilated location, away from direct sunlight, to reduce the possibility of a gasoline vapor explosion.

OPERATION

FUEL HOSE CONNECTIONS (standard or optionally applicable equipment)
[When using the portable fuel tank] Turn the portable fuel tank vent knob counterclockwise to the open position (p. 26) and remove the fuel hose connector cap.
FUEL HOSE CONNECTOR (FEMALE)

Connect the fuel hose to the portable fuel tank and the outboard motor, as shown. Be sure both connectors snap securely into place. Always disconnect the fuel hose and install fuel inlet cap when tilting up the outboard motor, storing or transporting the outboard motor.

FUEL PRIMING (standard or optionally applicable equipment)
[When using the portable fuel tank]

Turn the portable fuel tank vent knob counterclockwise to the open position (p. 26) and turn the fuel valve lever to the portable fuel tank position (p. 19).

OUTLET END

(outboard motor side)

PRIMING BULB

(FUEL TANK SIDE)
FUEL HOSE CONNECTOR (FEMALE) (OUTBOARD MOTOR SIDE)
40

INLET END (portable fuel tank side)
Hold the priming bulb up in the direction of the arrow; then squeeze the priming bulb several times until it feels firm, indicating that fuel has reached the carburetor.
Check to be sure there are no fuel leaks before starting the engine.

OPERATION

Do not touch the priming bulb with the engine running or when tilting up the outboard motor. The carburetor could overflow.
INFREQUENT OR OCCASIONAL USE
If your outboard motor will be used on an infrequent or intermittent basis, please refer to the fuel section of the STORAGE chapter (p. 84) for additional information regarding fuel deterioration.

STARTING THE ENGINE
Prime the carburetor with gasoline. (When using the internal fuel tank) When starting the engine for the first time after purchasing an outboard motor, or when starting the engine after draining the gasoline (p. 37). (When using the portable fuel tank) Connect the fuel line (p. 40) and prime the engine using the priming bulb (p. 40).
EMERGENCY EMERGENCY STOP STOP SWITCH SWITCH CLIP

1. Put the emergency stop switch clip in the emergency stop switch, and attach the emergency stop switch lanyard securely to the operator or to the PFD (Personal Flotation Device) equipped to an operator.
The engine will not start or run unless the emergency stop switch clip is in the emergency stop switch.
The emergency stop switch clip and emergency stop switch lanyard system is a safety device that will stop the engine if you fall away from the controls while operating the boat.

Always attach the emergency stop switch lanyard securely to the operator or to the PFD equipped to an operator before starting the engine.

2. Connect the battery charge cable (equipped type) (p. 28).

EMERGENCY STOP SWITCH LANYARD

OPERATION
OPEN
VENT KNOB
3. Turn the internal fuel tank vent knob counterclockwise to the open position (p. 21).
Always open the internal fuel filler cap vent knob when using the portable fuel tank.
42

FUEL VALVE LEVER
ON (BF4A) or INTERNAL FUEL TANK POSITION (BF5D and BF6A)
OFF (BF4A) or PORTABLE FUEL TANK POSITION (BF5D and BF6A)

[BF4A] OFF
ON [BF5D and BF6A] PORTABLE FUEL TANK POSITION

INTERNAL FUEL TANK POSITION

4. If you are using the internal fuel tank, turn the fuel valve lever to the ON position (BF4A) or internal fuel tank position (BF5D and BF6A) (p. 19). If you are using the portable fuel tank, turn the fuel valve lever to the portable fuel tank position (BF5D and BF6A) (p. 19).

N (neutral)
GEARSHIFT LEVER
[USA model] N (neutral)

[Canadian model] N (neutral)

OPERATION
5. Check the position of the gearshift lever. It must be in the N (neutral) position for starting.
The recoil starter will not operate if the gearshift lever is in the F (forward) or R (reverse) position.

OPERATION
CHOKE KNOB

INDEX MARK THROTTLE GRIP

Direction to pull

OFF ON

6. Pull the choke knob when the engine is in any of the following conditions: · When the engine is cold or the outside temperature is low. · When restarting the engine after supplying fuel due to the internal fuel tank running out of fuel. In this case, when the engine starts, immediately return the choke knob to its original position.

[USA model] [Canadian model]

START POSITION

7. Align the START position with the index mark for starting the engine.

STARTER GRIP
8. Pull the starter grip lightly until you feel resistance, then pull briskly in the direction of the arrow as shown above.
Return the starter grip gently.

9. If the choke knob was pulled to the ON position to start the engine, gradually push it to the OFF position as the engine warms up.
Also, as the engine warms up, the throttle grip can be turned to the SLOW position without stalling.
10.Before getting underway, allow the engine to warm-up sufficiently to ensure good performance.
During the warm-up period, check the oil pressure indicator (p. 24) and cooling system indicator (p. 25).
If the indicators show any abnormal condition, immediately stop the engine and determine the cause of the problem. Refer to TAKING CARE OF UNEXPECTED PROBLEMS on p. 94 and 97.

EMERGENCY STARTING
If the recoil starter is inoperative, you can start the engine using the emergency starter rope that came with your outboard motor.
1. Connect the battery charge cable (equipped type) (p. 28).
2. Turn the internal fuel tank vent knob counterclockwise to the open position (p. 21).
Always open the internal fuel filler cap vent knob when using the portable fuel tank.

OPERATION
FUEL VALVE LEVER
ON (BF4A) or INTERNAL FUEL TANK POSITION (BF5D and BF6A) OFF (BF4A) or PORTABLE FUEL TANK POSITION (BF5D and BF6A)
45

OPERATION
[BF4A] OFF ON [BF5D and BF6A]

3. If you are using the internal fuel tank, turn the fuel valve lever to the ON position (BF4A) or internal fuel tank position (BF5D and BF6A) (p. 19). If you are using the portable fuel tank, turn the fuel valve lever to the portable fuel tank position (BF5D and BF6A) (p. 19).

N (neutral)
GEARSHIFT LEVER

PORTABLE FUEL TANK POSITION
INTERNAL FUEL TANK POSITION

[USA model] N (neutral)

OPERATION

THROTTLE CABLES

COVER HOOK

[Canadian model] N (neutral)
4. Move the shift lever to the N (neutral) position.
5. Unlock and remove the engine cover (p. 63).

COVER HOOK
6. Release the throttle cables from the cover hook.

NEUTRAL START CABLE
7. Release the neutral start cable from the cover hook.
RECOIL CASE

NEUTRAL START CABLE
8. Disconnect the neutral start cable from recoil case.
47

OPERATION

6 mm FLANGE BOLT

6 mm CAP NUT

WASHER

THROTTLE CABLES

6 mm FLANGE BOLT (tighten by hand)

6 mm FLANGE BOLTS AND RECOIL WASHERS CASE

6 mm CAP NUTS AND WASHERS

9. Remove the two 6 mm cap nuts, two washers, two 6 mm flange bolts and two washers, and remove the recoil case.

Take care not to lose the bolts, nuts and washers.
48

CORD HOOK
6 mm FLANGE BOLT (tighten by hand)
10.Install and tighten the 6 mm flange bolts by hand.
11.Hook the throttle cables to the cord hook.

NEUTRAL START CABLE
12.Hook the neutral start cable to the under case.
13.Make sure the shift lever in the N (neutral) position.
The “Neutral Starting System” will not work in emergency starting. Be sure to set the shift lever into N (neutral) position to prevent start-in-gear when starting the engine in emergency. Sudden unexpected acceleration could result in serious injury or death.

EMERGENCY STOP SWITCH

CHOKE KNOB

OPERATION
INDEX MARK THROTTLE GRIP

OFF ON

EMERGENCY STOP SWITCH CLIP
EMERGENCY STOP SWITCH LANYARD
14.Put the emergency stop switch clip in the emergency stop switch, and attach the emergency stop switch lanyard securely to the operator or to the PFD (Personal Flotation Device) worn by the operator.

15.To start a cold engine, pull the choke knob to the ON position. To restart a warm engine, leave the choke knob in the OFF position.

[USA model] [Canadian model]

START POSITION

16.Align the START position with the index mark for starting the engine.

OPERATION
STARTER PULLEY

NOTCH

STARTER ROPE

KNOTTED END

17.Set the knotted end of the emergency starter rope (provided with the engine) in the notch in the starter pulley. Wind the rope clockwise around the starter pulley.

18.Pull the emergency starter rope slowly until resistance is felt, then pull briskly.

Keep away from moving parts while pulling the rope.

If necessary, rewind the rope and pull again. If the engine does not start after several attempts, refer to TAKING CARE OF UNEXPECTED PROBLEMS, p. 91.
Exposed moving parts can cause injury.
· Do not operate the outboard motor without the engine cover.
· Use extreme care when installing the engine cover.

19.If the choke control was used to start the engine, return the control to the normal operating position as the engine warms up.
During the warm-up period, check the oil pressure indicator (p. 24), and cooling system indicator (p. 25).
20.Install the engine cover (p. 63), and lock it in place by locking the engine cover lock lever.
21.If it was necessary to remove the emergency stop switch lanyard from you to perform the emergency starting procedure, be sure the lanyard is attached securely to the operator before operating the outboard motor.
22.Have your closest authorized Marine dealer check your system and correct the problem, so you can use the recoil starter.

OPERATION

STOPPING THE ENGINE Emergency Engine Stopping
EMERGENCY STOP SWITCH CLIP
EMERGENCY STOP SWITCH LANYARD
PULL EMERGENCY STOP SWITCH

To stop the engine in an emergency, pull the emergency stop switch clip out of the emergency stop switch by pulling the emergency stop switch lanyard.
If the emergency stop switch is activated while the engine is running, the engine will shut down abruptly and the boat will quickly decelerate, potentially causing occupants and objects to be thrown forward and/or overboard. If the emergency stop switch is activated, the emergency stop switch clip must be reinserted before the engine can be restarted.
We suggest that you stop the engine this way occasionally to verify that the engine and emergency stop switch are operating properly.

Normal Engine Stopping
THROTTLE GRIP SLOW

[USA model] [Canadian model]

SLOW

OPERATION
N (neutral)
GEARSHIFT LEVER [USA model] N (neutral)
[Canadian model] N (neutral)
52

1. Move the throttle grip to the slowest speed and gearshift lever to the N (neutral) position.
PUSH
EMERGENCY STOP SWITCH
After cruising at full throttle, cool down the engine by idling for a few minutes before stopping the engine. 2. Press the emergency stop switch
once to stop the engine. 3. Disconnect the battery charge cable
(equipped type) (p. 29).

4. When the boat is not in use, remove and store the emergency stop switch clip and lanyard. If you are using the internal fuel tank, turn the fuel valve lever to the OFF position (BF4A) or portable fuel tank position (BF5D and BF6A) (p. 19) and close the internal fuel tank vent by turning the vent knob clockwise all the way (p. 21). If you are using a portable fuel tank, close the internal fuel tank vent by turning the vent knob clockwise all the way (p. 21) and close the portable fuel tank vent by turning the vent knob clockwise all the way (p. 26). If you will be tilting up the outboard motor, storing or transporting the outboard motor, disconnect the fuel hose connectors from the outboard motor and portable fuel tank (p. 40), install fuel hose connector cap, close the internal fuel tank vent by turning the vent knob clockwise all the way (p. 21) and close the portable fuel tank vent by turning the vent knob clockwise all the way (p. 26).

GEARSHIFTING AND THROTTLE OPERATION
THROTTLE GRIP SLOW

N (neutral)

R (reverse)

F (forward)

[USA model] [Canadian model]

GEARSHIFT LEVER [USA model] N (neutral)

OPERATION
To shift gears, turn the throttle grip to the SLOW position; then move the gearshift lever to select the F (forward), N (neutral), or R (reverse) gears.
Do not turn the throttle grip in the FAST direction in R (reverse) and N (neutral) gears.
The recoil starter can be operated with the gearshift lever in the N (neutral) position only.

SLOW

R (reverse)

F (forward)

[Canadian model] N (neutral)

R (reverse) F (forward)
53

OPERATION

TO INCREASE FRICTION

TO DECREASE FRICTION

STEERING
RIGHT TURN

LEFT TURN
TO INCREASE FRICTION

TO DECREASE FRICTION

THROTTLE FRICTION KNOB
Use the throttle friction knob to help hold a constant throttle setting while cruising.
Turn the knob clockwise to increase throttle grip friction for holding a constant speed.
Turn the knob counterclockwise to decrease friction for easy grip rotation.

Steer by moving the tiller handle opposite the direction you want the boat to turn.

STEERING FRICTION BOLT
Use the steering friction bolt to help hold a steady course while cruising.
Turn the bolt clockwise to increase steering friction for holding a steady course.
Turn the bolt counterclockwise to decrease friction for easy turning.

OPERATION

CRUISING
Engine Speed
For best fuel economy, limit the throttle opening to 80%. Use the throttle friction control (p. 53) to help you hold a steady speed.
For rough water conditions or large waves, slow down to prevent the propeller from rising out of the water.

Transom Angle
Install the outboard motor at the best transom angle for stable cruising and maximum power.
Transom angle too large: Causes boat to “squat.”
Transom angle too small: Causes boat to “bow steer.”
It is necessary to adjust the transom angle of the outboard motor to compensate for changes in boat load, weight distribution, water conditions, or propeller selection.
Under normal running conditions, the boat will perform best when the antiventilation plate is level with the water surface.
When cruising into a high wind, adjust the outboard motor down slightly to level the boat and improve stability. With a tail wind, adjust the outboard motor up slightly (p. 37).

Excessive transom angle during operation can cause propeller ventilation, overheating, and water pump damage. This type of damage is not covered by the Distributor’s Limited Warranty (U.S.) / Distributor’s Warranty (CA.) (p. 112).
Transom Angle (Cruising)

OUTBOARD MOTOR ANGLE ADJUSTED TOO LOW

OUTBOARD MOTOR ANGLE ADJUSTED TOO HIGH

ROUGH WAVES

OUTBOARD MOTOR ANGLE ADJUSTED CORRECTLY

CORRECT GIVES MAXIMUM PERFORMANCE
55

OPERATION

SHALLOW WATER OPERATION
When operating in shallow water, tilt the outboard motor, using the tilt lever, so the propeller and gear case won’t hit the bottom.
ENGINE COVER GRIP

Do not use the tiller handle as a lever to raise the outboard motor. Applying excessive force to the tiller handle can damage it.
While the outboard motor is tilted, proceed at a low speed, and do not operate the outboard motor in reverse. The outboard motor will rise suddenly if operated in reverse.

Monitor water flow from the cooling

system indicator (p. 25) to be sure the

outboard motor is not tilted so high

that the water intakes are out of the

18°

water.

To tilt the outboard motor, raise the outboard motor to the 18° position by pulling on the engine cover grip.

An excessive tilt angle during operation can cause propeller ventilation, overheating, and water pump damage. This type of damage is not covered by the Distributor’s Limited Warranty (U.S.) / Distributor’s Warranty (CA.) (p. 112).

OPERATION

ENGINE COVER GRIP

MOORING, BEACHING , LAUNCHING
Before tilting up, leave the outboard motor in the running position for one minute after stopping the engine to drain the water from inside the engine.

ENGINE COVER GRIP

TILT LEVER
To return the outboard motor to the normal operating position, raise the outboard slightly by pulling on the engine cover grip, then pull the tilt lever to release the outboard, and then slowly lower the outboard motor.

1. Move the shift lever to the N (neutral) position and stop the engine.
2. Turn the fuel valve lever to the OFF position (BF4A) or portable fuel tank position (BF5D and BF6A) (p. 19).
3. When using the portable fuel tank (BF5D and BF6A), disconnect the fuel hose connectors from the outboard motor and portable fuel tank (p. 40), install fuel hose connector cap and close the portable fuel tank vent by turning the vent knob clockwise all the way (p. 26).
4. Close the internal fuel tank vent by turning the vent knob clockwise all the way (p. 21).

34°, 58° (when mooring)
To raise the outboard motor out of the water while the boat is moored, or for maximum clearance when beaching or launching, tilt the outboard motor to the 34° or 58° position.
Stop the engine before tilting the outboard motor. The 34° or 58° position is not an operating position.
Raise and lower the outboard motor as described on p. 56.

SERVICING YOUR OUTBOARD MOTOR

THE IMPORTANCE OF MAINTENANCE
Proper maintenance is essential for safe, economical, and trouble-free operation. It will also help reduce air pollution.
Failure to properly maintain this outboard motor, or failing to correct a problem before operation, could result in a significant malfunction.
Some malfunctions can cause serious injuries or death.
Always follow the inspection and maintenance recommendations and schedules in this owner’s manual.

To help you properly care for your outboard motor, the following pages include a maintenance schedule, routine inspection procedures, and simple maintenance procedures using basic hand tools. Other service tasks that are more difficult or require special tools are best handled by professionals and are normally performed by a Honda technician or other qualified mechanic.
The maintenance schedule applies to normal operating conditions. If you operate your outboard motor under unusual conditions, consult an authorized Honda Marine dealer for recommendations applicable to your individual needs and use.

Remember that your authorized Honda Marine dealer knows your outboard motor best and is fully equipped to maintain and repair it.
To ensure the best quality and reliability, use only new, Honda Genuine parts or their equivalents for repair and replacement.
Maintenance, replacement, or repair of the emission control devices and systems may be performed by any marine engine repair establishment or individual, using parts that are “certified” to EPA standards.

SERVICING YOUR OUTBOARD MOTOR

MAINTENANCE SAFETY

Safety Precautions

Some of the most important safety precautions follow. However, we cannot warn you of every conceivable hazard that can arise in performing maintenance. Only you can decide whether or not you should perform a given task.
Improper maintenance can cause an unsafe condition.
Failure to properly follow maintenance instructions and precautions can cause serious injuries or death.
Always follow the procedures and precautions in this owner’s manual.

· Make sure the engine is off before you begin any maintenance or repairs. This will eliminate several potential hazards:
Carbon monoxide poisoning from engine exhaust. Do not start or run the engine in a confined or partly enclosed area.
Burns from hot parts. Let the engine and exhaust system cool before touching.
Injury from moving parts. Do not run the engine unless instructed to do so.

· Read the instructions before you begin, and make sure you have the tools and skills required.
· To reduce the possibility of fire or explosion, be careful when working around gasoline. Use only a nonflammable solvent, not gasoline, to clean parts. Keep cigarettes, sparks, and flames away from all fuel-related parts.
· Wear gloves when handling the propeller to protect your hands from sharp edges.

SERVICING YOUR OUTBOARD MOTOR

TOOL KIT AND EMERGENCY STARTER ROPE

10 × 12 mm WRENCH FLAT SCREWDRIVER

PLIERS

EMERGENCY STARTER ROPE

SPARK PLUG WRENCH

GRIP

The following tools are supplied with the outboard motor for simple maintenance procedures and emergency repairs. An emergency starter rope is also supplied. Keep these items on the boat so that they will always be available if you need them. If your tool kit needs replacement, it is not available as a kit and each item must be ordered individually.

SHEAR PIN COTTER PIN

SPARE EMERGENCY STOP SWITCH CLIP

TOOL BAG

SERVICING YOUR OUTBOARD MOTOR

MAINTENANCE SCHEDULE

Follow the MAINTENANCE SCHEDULE table and service your outboard motor accordingly. Please note, a claim for warranty coverage will not be denied simply because the maintenance schedule for your outboard motor was not followed. However, any part(s) that fails specifically due to lack of maintenance, or improperly performed maintenance, would not be covered under the Distributor’s Limited Warranty (U.S.) / Distributor’s Warranty (CA.).

REGULAR SERVICE PERIOD (3)

Perform at every indicated month or

operating hour interval, whichever

comes first.

ITEM

Engine oil

Check level

Change

Gear case oil

Change

Starter rope

Check

Carburetor linkage

Check-adjust

Valve clearance

Check-adjust

Spark plug

Check-adjust

Replace

Propeller and cotter pin

Check

Anode

Check

Idling speed

Check-adjust

Lubrication

Grease

Each use o
o o (8)

After use

First month or
20 hrs.

o o
o (2) o (2)

o (2) o (1)

Every 6 months
or 100 hrs.
o o o o (2)
o
o (2) o (1)

Every year or
200 hrs.
o (2) o

Refer to page
64 65 67 78 –
70
79 35 69

(1) Lubricate more frequently when used in salt water.
(2) These items should be serviced by your servicing dealer, unless you have the proper tools and are mechanically proficient. Refer to the Honda shop manual for service procedures. See “Honda Publications” on page 109 for ordering information.
(3) For professional commercial use, log hours of operation to determine proper maintenance intervals. (8) When there is 1/3 or more consumption, please exchange.

SERVICING YOUR OUTBOARD MOTOR

REGULAR SERVICE PERIOD (3) Perform at every indicated month or

operating hour interval, whichever comes first.

ITEM Fuel tank and tank filter (Internal)

Clean

Fuel tank and tank filter (Portable) Clean

Thermostat

Check

Fuel filter

Check

Replace

Fuel line

Check

Replace

Bolts and nuts

Check-tightness

Breather tube

Check

Cooling water passages

Clean

Water pump

Check

Emergency stop switch

Check

Engine oil leak

Check

Each operation part

Check

Engine condition (7)

Check

Each use
o (5)
o o o o

After use

First month or
20 hrs.

Every 6 months
or 100 hrs.
o (2)

Every 2 years (If necessary) (2) (6)

o (2)

o (4)

Every year or
200 hrs.
o o (2)
o
o (2) o (2)

Refer to page
77 –
75
35 35 81 35 –

(2) These items should be serviced by your servicing dealer, unless you have the proper tools and are mechanically proficient. Refer to the Honda shop manual for service procedures. See “Honda Publications” on page 109 for ordering information.

(3) For professional commercial use, log hours of operation to determine proper maintenance intervals.

(4) When operating in salt water, turbid or muddy water, the engine should be flushed with clean water after each use.

(5) Check the fuel line for leaks, cracks or damage. If it is leaking, cracked or damaged, take it to your servicing dealer for replacement before using your outboard motor.

(6) Check the fuel line for leaks, cracks or damage. Replace the fuel line if there are signs of leaks, cracks or damage.

(7) Upon starting, check for unusual engine sounds and cooling water flowing freely from the check hole.

ENGINE COVER REMOVAL AND INSTALLATION
UNLOCK

SERVICING YOUR OUTBOARD MOTOR

STARTER GRIP

ENGINE COVER LATCH

ENGINE COVER

ENGINE UNDER COVER
ENGINE COVER HOOK

ENGINE COVER

ENGINE COVER HOOK
ENGINE UNDER COVER

To remove, unlatch the engine cover latch and slide the engine cover forward. Unhook the engine cover hook as shown. Remove the engine cover while turning a starter grip to the upward.

To install, lower the engine cover while turning a starter grip to the upward. Hook the engine cover hook as shown, and latch the engine cover latch.
63

SERVICING YOUR OUTBOARD MOTOR

Engine Oil Level Check
Check the engine oil level with the engine stopped and the outboard motor in the vertical position.
To avoid incorrect gauging of the engine oil level, inspect the oil level when the engine has cooled.
1. Unlock and remove the engine cover (p. 63).

2. Remove the oil filler cap/dipstick and wipe it clean.
OIL FILLER CAP/ DIPSTICK

3. Insert the dipstick and screw it in, then remove it and check the oil level shown on the dipstick.

OIL FILLER CAP/ DIPSTICK
UPPER LIMIT
LOWER LIMIT
4. If the oil level is low, add oil to reach the upper limit mark shown on the dipstick. Use the oil recommended on p. 67.

Running the engine with a low oil level can cause engine damage.
5. Install the oil filler cap/dipstick and tighten it securely.
6. Install the engine cover (p. 63), and lock it in place by locking the engine cover latch.
64

SERVICING YOUR OUTBOARD MOTOR

When you check the oil level with the dipstick, you might notice the engine oil appears milky or the oil level has increased. If you notice either condition, change the engine oil. See the following table for an explanation of these conditions

Operating Method
Running the engine below 3,000 rpm for more than 30% of the time so the engine does not warm up.
Frequent starting and stopping without allowing the engine to warm up.

Result
· Water condenses in the engine and mixes with the oil, resulting in a milky appearance.
· Unburned fuel mixes with the oil, increasing the volume of oil.

Effect
The engine oil deteriorates, becomes less efficient as a lubricant, and causes an engine malfunction.

Engine Oil Change
An engine oil evacuation device may be used to remove the engine oil.
Drain the used oil into a suitable container while the engine is warm. Warm oil drains quickly and completely.
1. Unlock and remove the engine cover (p. 63).

SERVICING YOUR OUTBOARD MOTOR

DRAIN BOLT
2. Remove the oil filler cap, and remove the engine oil drain bolt and washer.
3. Allow the used oil to drain completely, then reinstall the engine oil drain bolt and a new washer, and tighten it securely.
ENGINE OIL DRAIN BOLT TORQUE: 24 lbf·ft (33 N·m, 3.4 kgf·m)

Improper disposal of engine oil can be harmful to the environment. If you change your own oil, please dispose of the used oil properly. Put it in a sealed container, and take it to a recycling center. Do not discard it in a trash bin, dump it on the ground, or pour it down a drain.

Insert the dipstick and screw it in, then remove it and check that oil level is shown on the dipstick upper limit mark. ENGINE OIL CAPACITY: 18 US oz (0.55 L, 0.48 Imp qt)
DIPSTICK
UPPER LIMIT

4. With the outboard in a vertical position, using the recommended oil, fill to the upper limit mark on the dipstick.

LOWER LIMIT
5. Install the oil filler cap and tighten it securely.
6. Install the engine cover (p. 63), and lock it in place by locking the engine cover latch.

SERVICING YOUR OUTBOARD MOTOR

Engine Oil Recommendations
Oil is a major factor affecting performance and service life.

Gear Case Oil Change
Change the gear case oil with the engine stopped and the outboard motor in the vertical position.
OIL LEVEL SCREW

AMBIENT TEMPERATURE

2. Allow the used oil to drain completely, then install an oil pump adapter in the oil drain hole.
If water or contaminated (milky-colored) oil flows out the drain hole when the screw is removed, have the outboard motor checked by an authorized Marine dealer.

Honda 10W-30 FC-W® outboard motor oil is recommended for general use.

FC-W® is a registered trademark of the National Marine Manufacturers Association.
If Honda 10W-30 FC-W oil is not available, Honda recommends that you use API service category SG , SH or SJ oil. The SAE oil viscosity and service category are written in the API label on the oil container.

1. Place a suitable container below the oil drain hole to catch the used oil, then remove the oil level screw and oil drain/fill screw.

SERVICING YOUR OUTBOARD MOTOR

OIL LEVEL SCREW

OIL LEVEL SCREW TORQUE: 2.6 lbf·ft (3.5 N·m, 0.36 kgf·m)
Avoid losing more than 1 fl oz (30 cm3) while reinstalling the drain/ fill screw.
OIL DRAIN SCREW TORQUE: 2.6 lbf·ft (3.5 N·m, 0.36 kgf·m)

GEAR OIL BOTTLE

3. Add oil through the oil drain hole until it flows out the oil level hole, and then install the oil level screw. Remove the pump adapter and install the oil drain/fill screw.
GEAR OIL CAPACITY: 3 US oz (0.10 L, 0.09 Imp qt)
Outboard motor SAE 75W-90 or 90 hypoid gear oil API Service category (GL-4)

SERVICING YOUR OUTBOARD MOTOR

Lubrication Points
Apply Honda Marine waterproof grease to the parts shown below: Lubrication interval: 20 operating hours or one month after the date of purchase or the initial use, then every 100 operating hours or 6 months (refer to the maintenance schedule on page 61).

EXTENSION CASE

THROTTLE LINK

SHIFT SHAFT

To prevent corrosion, apply anticorrosion oil to pivot

TILLER HANDLE PIVOT

surfaces where grease cannot penetrate.

CLAMP SCREWS

SWIVEL CASE

TRANSOM ANGLE

TILT RELEASE

ADJUSTING ROD

LEVER AND

(LEFT AND RIGHT

REVERSE LOCK

INSERTION SECTIONS OF

ROD

THE TRANSOM ANGLE PROPELLER SHAFT ADJUSTING ROD)

Apply Honda Marine Corrosion Inhibitor (or equivalent) to all areas under the engine cover and any exposed metal surfaces.

SERVICING YOUR OUTBOARD MOTOR

Spark Plug Service
RECOMMENDED SPARK PLUG: BKR6E-E (NGK)

New plug

Plug needing replacement

Incorrect spark plug can cause engine damage.
SPARK PLUG WRENCH

SIDE ELECTRODE 0.024 – 0.028 in (0.6 – 0.7 mm)
SEALING WASHER INSULATOR

SPARK PLUG CAP
1. Unlock and remove the engine cover (p. 63).
2. Disconnect the spark plug cap from the spark plug.
3. Remove the spark plug with a spark plug wrench and screwdriver provided in the tool kit.
70

4. Inspect the spark plug. Replace it if the electrode is worn, or if the insulator is cracked or chipped.

5. Measure the spark plug electrode gap with a wire-type feeler gauge. Correct the gap, if necessary, by carefully bending the side electrode.
The gap should be: 0.024 – 0.028 in (0.6 – 0.7 mm)

SERVICING YOUR OUTBOARD MOTOR

6. Install the spark plug carefully, by hand, to avoid cross-threading.
7. After the spark plug seats, tighten with a spark plug wrench to compress the sealing washer.
SPARK PLUG TORQUE: 13 lbf·ft (18 N·m, 1.8 kgf·m)
If reinstalling the used spark plug, tighten 1/8 1/4 turn after the spark plug seats.
If installing new spark plug, tighten 1/2 turn after the spark plug seats.
A loose spark plug can overheat and damage the engine. Overtightening the spark plug can damage the threads in the cylinder head.
8. Attach the spark plug cap.
9. Install the engine cover (p. 63), and lock it in place by locking the engine cover latch.

REFUELING
If you do not anticipate using at least one complete tank of fuel within a 30 day period, we recommend adding Honda Marine Fuel Stabilizer or equivalent each time you refuel.
Internal Fuel Tank
FUEL TANK CAPACITY: 0.40 US gal (1.5 L, 0.33 Imp gal) With the engine stopped, turn the internal fuel tank vent knob counterclockwise to the open position (p. 21), and then remove the fuel filler cap. Refill the fuel tank if the fuel level is low.
FUEL FILLER CAP
VENT KNOB

MAXIMUM FUEL LEVEL
FUEL TANK
Refuel in a well-ventilated area. Fill the tank to the maximum fuel level. After refueling, install the fuel filler cap and tighten it securely. Close the internal fuel tank vent by turning the vent knob clockwise all the way (p. 21).
Fuel can damage paint and plastic. Be careful not to spill fuel when filling your fuel tank. Damage caused by spilled fuel is not covered under the Distributor’s Limited Warranty (U.S.) / Distributor’s Warranty (CA.).
71

SERVICING YOUR OUTBOARD MOTOR

Portable Fuel Tank
FUEL TANK CAPACITY: 3.2 US gal (12 L, 2.6 Imp gal)
Check the fuel level. Refill the fuel tank if the fuel level is low.
Remove the fuel tank from the boat for refueling.

Never refill the fuel tank inside a building where gasoline fumes may reach flames or sparks. Keep gasoline away from appliance pilot lights, barbecues, electric appliances, power tools, etc.
Spilled fuel is not only a fire hazard, it causes environmental damage. Wipe up spills immediately.
72

1. Turn the vent knob counterclockwise all the way to open the vent.
VENT KNOB OPEN
2. Turn the fuel filler cap counterclockwise so that it touches the pressure relief tab.
FUEL FILLER CAP
PRESSURE RELIEF TAB

SERVICING YOUR OUTBOARD MOTOR

3. Press down the pressure relief tab, and then turn the fuel filler cap 1/4 counterclockwise. Release the pressure relief tab. Wait to relieve pressure.
FUEL FILLER CAP
PRESS
PRESSURE RELIEF TAB
4. The fuel filler cap will lock again. Press down the pressure relief tab, and turn counterclockwise to remove the fuel filler cap.
Refuel in a well-ventilated area. Fill the tank to the SAFE FILL LEVEL line.

SAFE FILL LEVEL

After refueling, install the cap and tighten it until you hear it click. Close the vent by turning the vent knob clockwise all the way, and return the fuel tank to the boat.

FUEL FILLER CAP

VENT KNOB

Fuel can damage paint and plastic. Be careful not to spill fuel when filling your fuel tank. Damage caused by spilled fuel is not covered under the Distributor’s Limited Warranty (U.S.) / Distributor’s Warranty (CA.).

Gasoline is highly flammable and explosive.
You can be burned or seriously injured when handling fuel.
· Stop the engine and let it cool before handling fuel.
· Keep heat, sparks, and flame away.
· Handle fuel only outdoors. · Keep away from your vehicle. · Wipe up spills immediately.
Never refill the fuel tank inside a building where gasoline fumes may reach flames or sparks. Keep gasoline away from appliance pilot lights, barbecues, electric appliances, power tools, etc.
Spilled fuel is not only a fire hazard, it causes environmental damage. Wipe up spills immediately.
73

SERVICING YOUR OUTBOARD MOTOR

FUEL RECOMMENDATIONS
Use unleaded gasoline with a pump octane rating of 86 or higher.
Your outboard motor is certified to operate on unleaded gasoline. Unleaded gasoline produces fewer engine and spark plug deposits and extends exhaust system life.
Never use gasoline that is stale, contaminated, or mixed with oil. Avoid getting dirt or water in the fuel tank.
You may use unleaded gasoline containing no more than 10% ethanol (E10) or 5% methanol by volume. In addition, methanol must contain cosolvents and corrosion inhibitors.
Use of fuels with content of ethanol or methanol greater than shown above may cause starting and/or performance problems. It may also damage metal, rubber, and plastic parts of the fuel system.
74

Engine damage or performance problems that result from using a fuel with percentages of ethanol or methanol greater than shown above are not covered under warranty.
If your outboard motor will be used on an infrequent or intermittent basis, please refer to the fuel section of the STORAGE chapter (p. 84) for additional information regarding fuel deterioration.

SERVICING YOUR OUTBOARD MOTOR

Fuel Filter Inspection and Replacement
The fuel filter is located under the engine cover, on the right side of the engine. Water or sediment accumulation in the filter can cause loss of power or hard starting. To prevent engine malfunction, inspect the filter and replace when necessary.
Gasoline is highly flammable and explosive.
You can be burned or seriously injured when handling fuel.
· Stop the engine and let it cool before handling fuel.
· Keep heat, sparks, and flame away.
· Handle fuel only outdoors. · Keep away from your vehicle. · Wipe up spills immediately.

UNLOCK
ENGINE COVER LATCH
1. Unlock and remove the engine cover (p. 63).
2. Inspect the fuel filter for water and/ or sediment accumulation. If the fuel filter is OK, reinstall it. If water and/or sediment are present, replace the fuel filter as described in the following steps. Always replace the fuel filter at the scheduled replacement interval (p. 62).

3. Turn the fuel valve lever to the OFF position (BF4A) or portable fuel tank position (BF5D and BF6A) (p. 19).
4. When using the portable fuel tank (BF5D and BF6A), turn the portable fuel tank vent knob counterclockwise to the open position (p. 26), disconnect the fuel hose connectors from the outboard motor and portable fuel tank (p. 40), install fuel hose connector cap and close the portable fuel tank vent by turning the vent knob clockwise all the way (p. 26).
5. Close the internal fuel tank vent by turning the vent knob clockwise all the way (p. 21).

SERVICING YOUR OUTBOARD MOTOR

FUEL HOSE FUEL FILTER
HOSE CLAMPS
6. Place commercially available hose clips on the fuel hoses on each side of the fuel filter to prevent fuel leakage when the fuel hoses are disconnected.
7. Remove the fuel hoses from the used filter, and discard the filter. To ease hose removal, release the hose clamps by squeezing the clamp ends together with pliers while pulling off the hoses.
76

FUEL HOSE CLIPS FUEL PUMP
ARROW (Fuel Flow Direction)
8. Install the new fuel filter on the fuel hoses, with the fuel flow arrow pointing toward the fuel pump as shown. Fuel flow will be impeded if the fuel filter is installed backward.
9. Connect the fuel hoses to the fuel filter securely with the hose clamps.

10.Remove the fuel hose clips used to close the fuel hoses.
11.When using the internal fuel tank, prime the carburetor with gasoline (p. 37). When using the portable fuel tank, connect the fuel line (p. 39) and prime the engine using the priming bulb (p. 40).
12.Check for fuel leaks. Repair any fuel leaks if necessary.
13.Install the engine cover (p. 63), and lock it in place by locking the engine cover latch.
If loss of power or hard starting are found to be caused by excessive water or sediment accumulation in the fuel filter, inspect the fuel tank.
Clean the fuel tank and tank filter if necessary. It may be necessary to drain the fuel tank completely and refill with fresh gasoline.

Portable Fuel Tank and Tank Filter Cleaning
(standard or optionally applicable equipment)

Fuel Tank

SERVICING YOUR OUTBOARD MOTOR
Fuel Tank Filter
FUEL TANK FILTER JOINT (Fuel Hose Connector)

FUEL HOSE (standard equipment)
Empty the portable fuel tank into an approved gasoline container. Use a funnel to avoid spilling fuel. Rinse the fuel tank with nonflammable solvent to remove any accumulated sediment.

CONNECTOR GASKET

FUEL TANK FILTER

1. Turn the fuel tank filter joint counterclockwise and remove the fuel tank filter.
2. Clean the fuel tank filter in nonflammable solvent. Inspect the fuel tank filter and the connector gasket. Replace them if damaged.
3. After cleaning, reinstall the fuel tank filter and fuel tank filter joint securely.

SERVICING YOUR OUTBOARD MOTOR
Recoil Starter Rope Inspection Anode Replacement
ANODE

BOLT

RECOIL STARTER ROPE
Inspect the recoil starter rope, and replace it if it becomes frayed. Always keep the emergency starter rope on the boat in case the recoil starter rope fails.
78

The anode is located on the antiventilation plate. It is made of a sacrificial material that helps to protect the outboard motor from corrosion.
Replace the anode when it has been reduced to about two-thirds of the original size, or if it is crumbling.
Painting or coating the anode will defeat its purpose and will lead to rust and corrosion damage to the outboard motor. The anode must be exposed to the water in order to protect the outboard motor.

SERVICING YOUR OUTBOARD MOTOR

Propeller and Shear Pin Replacement
A shear pin is used to protect the propeller and drive mechanism from damage when the propeller strikes an obstruction.
If the propeller is damaged by striking a rock, or other obstacle, replace the propeller.
Before replacing the propeller or the shear pin, remove the emergency stop switch clip from the emergency stop switch to prevent any possibility of the engine being started while you are working with the propeller.
The propeller blades may have sharp edges, so wear heavy gloves to protect your hands.
Operating the outboard motor at higher altitudes will reduce available power. This may require decreasing the propeller pitch to maintain correct engine RPM.

Removal
COTTER PIN
PROPELLER CAP
SHEAR PIN

1. Remove the cotter pin, the propeller cap, and the propeller.
2. Remove the broken shear pin and replace it with a new one.
79

SERVICING YOUR OUTBOARD MOTOR

Installation

COTTER PIN

Spare shear pin and cotter pin are provided in the engine compartment (p. 60).

1. Install the shear pin and the propeller, then install the propeller cap finger tight.
2. Be sure to replace the cotter pin with a new one.
· Use a Honda Genuine stainless steel cotter pin or equivalent cotter pin and bend the pin ends as shown.
80

CLEANING AND FLUSHING

Cleaning and Flushing
After each use in salt water or dirty water, thoroughly clean and flush the outboard motor with fresh water.
Disengage the emergency stop switch clip from the emergency stop switch, and pull the recoil starter rope several times to expel any water remaining in the water pump.
Touch up any damaged paint, and coat areas that may rust with Honda Corrosion Inhibitor, or equivalent. Lubricate controls with a silicone spray lubricant.

Cleaning
Wash the outside of the outboard motor with clean, fresh water to remove mud, salt, seaweed, etc.
Cleaning of the outside of the outboard motor should be performed with the engine cover installed.
AIR INTAKE

Flushing With the Honda Water Hose Connector
1. Tilt down the outboard motor (p. 56).
FLUSH KIT (Optional Equipment)
WATER MOUTH WATER HOSE SEAT CONNECTOR WATER MOUTH NUT

Be careful not to spray water into the air intake. If water penetrates inside the engine cover from the air intake, it may cause malfunction.

2. Remove the flush screw from the WASH screw hole and install the water hose connector.
3. Attach a hose from a fresh water faucet to the water hose connector of the flush kit.

CLEANING AND FLUSHING

4. Remove the propeller (p. 79).

5. Turn on the fresh water supply to hose.

6. Start the engine and run in N (neutral) for 10 minutes.

Check that water is draining from the cooling system indicator, the water intake port and the exhaust port.

WATER HOSE CONNECTOR

EXHAUST PORT

7. After flushing, when using the internal fuel tank, close the internal fuel tank vent by turning the vent knob clockwise all the way (p. 21), turn the fuel valve lever to the OFF position (BF4A) or portable fuel tank position (BF5D and BF6A) (p. 19) and leave the outboard motor in the running position for one minute to drain the water from inside the engine.

After flushing, when using the portable fuel tank (BF5D and BF6A), turn the portable fuel tank vent knob counterclockwise to the open position (p. 26), disconnect the fuel hose connectors from the outboard motor and portable fuel tank (p. 40), install fuel hose connector cap, close the internal fuel tank vent by turning the vent knob clockwise all the way (p. 21), close the portable fuel tank vent by turning the vent knob clockwise all the way (p. 26) and leave the outboard motor in the running position for one minute to drain the water from inside the engine.
8. Reinstall the flush screw and the propeller (p. 80).
9. Tilt up the outboard motor (p. 57).

WATER HOSE WATER INTAKE PORT

CLEANING AND FLUSHING

Flushing Without the Honda Water Hose Connector
It is necessary to run the engine during the flushing procedure. For safety, remove the propeller from the outboard motor (p. 79).
ANTIVENTILATION PLATE
1. Tilt down the outboard motor (p. 56).
2. Place a container under the outboard motor, and fill it with clean, fresh water. The water level must be at least 2 inches (5 cm) above the antiventilation plate.

Running the engine without good water circulation can cause overheating and water pump damage.
Damage caused by running the outboard motor without sufficient cooling water is not covered by the Distributor’s Limited Warranty (U.S.) / Distributor’s Warranty (CA.) (p. 112).
3. Start the engine and run in the N (neutral) position at low speed for at least 10 minutes.
4. After flushing, when using the internal fuel tank, close the internal fuel tank vent by turning the vent knob clockwise all the way (p. 21), turn the fuel valve lever to the OFF position (BF4A) or portable fuel tank position (BF5D and BF6A) (p. 19) and leave the outboard motor in the running position for one minute to drain the water from inside the engine.

After flushing, when using the portable fuel tank (BF5D and BF6A), turn the portable fuel tank vent knob counterclockwise to the open position (p. 26), disconnect the fuel hose connectors from the outboard motor and portable fuel tank (p. 40), install fuel hose connector cap, close the internal fuel tank vent by turning the vent knob clockwise all the way (p. 21), close the portable fuel tank vent by turning the vent knob clockwise all the way (p. 26) and leave the outboard motor in the running position for one minute to drain the water from inside the engine.
5. Reinstall the propeller (p. 80).
6. Tilt up the outboard motor (p. 57).
83

STORAGE

Fuel
Depending on the region where you operate your outboard, fuel formulations may deteriorate and oxidize rapidly. Fuel deterioration and oxidation can occur in as little as 15 days and may cause damage to the carburetor and fuel system. Please check with your servicing dealer for local storage recommendations.
Gasoline will oxidize and deteriorate in storage. Deteriorated gasoline will cause hard starting, and it leaves gum deposits that clog the fuel system. If the gasoline in your fuel tank and carburetor deteriorates during storage, you may need to have the carburetor and other fuel system components serviced or replaced.
84

The length of time that gasoline can be left in your fuel tank and carburetor without causing functional problems will vary with such factors as gasoline blend, your storage temperatures, and whether the fuel tank is partially or completely filled. The air in a partially filled fuel tank promotes fuel deterioration. Very warm storage temperatures accelerate fuel deterioration. Fuel deterioration problems may occur in less than 15 days, if the gasoline was not fresh when you f illed the fuel tank.
You can extend fuel storage life by adding a gasoline stabilizer that is formulated for that purpose, or you can avoid fuel deterioration problems by draining all the fuel from the fuel tank and carburetor.
The Distributor’s Limited Warranty (U.S.) / Distributor’s Warranty (CA.) (p. 112) does not cover fuel system damage or engine performance problems resulting from neglected storage preparation.

Adding a Fuel Stabilizer
When adding a fuel stabilizer, fill the internal fuel tank with fresh gasoline. If only partially filled, air in the internal fuel tank will promote fuel deterioration during storage. If you keep an additional container of gasoline for refueling, be sure that it contains only fresh gasoline.
1. Add Honda Marine fuel stabilizer or equivalent following the instructions on the label.
2. After adding a fuel stabilizer, run the engine in water for 10 minutes to be sure that the treated gasoline has replaced the untreated gasoline in the carburetor.
3. Stop the engine (p. 51).

STORAGE

Draining the Fuel System
You can avoid fuel deterioration problems by draining the fuel tank and carburetor.
1. When using the portable fuel tank (BF5D and BF6A), turn the portable fuel tank vent knob counterclockwise to the open position (p. 26), disconnect the fuel hose connectors from the outboard motor and portable fuel tank (p. 40), install fuel hose connector cap, remove the portable fuel filler cap, drain the gasoline from the portable fuel tank into a suitable container, install the portable fuel filler cap and close the portable fuel tank vent by turning the vent knob clockwise all the way (p. 26).

Gasoline is highly flammable and explosive.
You can be burned or seriously injured when handling fuel.
· Stop the engine and let it cool before handling fuel.
· Keep heat, sparks, and flame away.
· Handle fuel only outdoors. · Keep away from your vehicle. · Wipe up spills immediately.
2. Turn the internal fuel tank vent knob counterclockwise to the open position (p. 21), remove the fuel filler cap, and drain the gasoline from the internal fuel tank into a suitable container.
3. Install the fuel filler cap.
4. Turn the fuel valve lever to the OFF position (BF4A) or portable fuel tank position (BF5D and BF6A) (p. 19).

5. Unlock and remove the engine cover (p. 63).
CARBURETOR DRAIN PORT

DRAIN SCREW

AIR GUIDE

DRAIN TUBE
ENGINE UNDER COVER
6. Disconnect the drain tube from the air guide, then connect it to the carburetor drain port as shown.
7. With the outboard motor in a vertical position, place an approved gasoline container below the fuel drain outlet, and use a funnel to avoid spilling fuel. Loosen the drain screw to drain fuel from the carburetor.

STORAGE

8. After the fuel has drained from the carburetor, tighten the drain screw securely.
9. Reconnect the drain tube to the air guide and the engine under cover.
10.Close the internal fuel tank vent by turning the vent knob clockwise all the way (p. 21).
11.Turn the fuel valve lever to the OFF position (BF4A) or portable fuel tank position (BF5D and BF6A) (p. 19).
86

12.If you need to store fuel in the fuel tank, you can extend fuel storage life by filling the fuel tank with fresh gasoline and adding Honda Marine fuel stabilizer or equivalent following the directions on the container (p. 84).
Store the portable fuel tank in a cool dry place out of direct sunlight.
(When using the internal fuel tank)
When starting the engine after draining the gasoline, prime the carburetor with gasoline (p. 37).

Engine Oil
Change the engine oil (p. 65).
Engine Cylinder
1. Remove the spark plug (p. 70), and remove the emergency stop switch clip from the emergency stop switch.
2. Pour 1 2 teaspoons (5 10 cm3) of clean engine oil into the cylinder.
3. Pull the starter grip several times to distribute the oil in the cylinder.
When cranking the engine with an open ignition circuit (spark plug removed from the ignition circuit), remove the emergency stop switch clip from the emergency stop switch to prevent possible damage to the ignition system.
4. Reinstall the spark plug and connect the spark plug cap (p. 71).
5. Install the engine cover (p. 63), and lock it in place by locking the engine cover latch.

STORAGE

STORAGE PRECAUTIONS
Select a well-ventilated storage area. If possible, avoid storage areas with high humidity. Disconnect the battery charge cable (equipped type) (p. 29).
CARRYING HANDLE

To carry the outboard motor, hold it by the carrying handle, or hold by the carrying handle and the lug beneath the engine under cover, as shown.

Lifting the outboard motor by the engine cover, or using the installed outboard motor as a handle or lever to move the boat, can damage the outboard motor.
If your internal fuel tank and portable fuel tank contains gasoline, store it away from any appliance that operates with a flame, such as a furnace, water heater, or clothes dryer. Also avoid any area with a spark-producing electric motor, or where power tools are operated.

Store the outboard motor either vertically or horizontally with the tiller handle side up and move the shift lever to the R (reverse) position to lock the tilt system.

STORAGE

CASE PROTECTORS
If storing horizontally, be sure to fold the tiller handle, and rest the outboard motor on its case protectors. Be sure all water has drained from the outboard motor before placing it on its side, so no residual water can enter the engine exhaust port.

· Any other horizontal storage position may cause damage to the outboard motor or oil leakage.
· Position the outboard motor so that the engine side is higher than the propeller side. Failure to do so may cause engine oil leakage.
Cover the outboard motor to keep out dust. Do not use a plastic sheet as a dust cover. A nonporous cover will trap moisture, promoting rust and corrosion.

REMOVAL FROM STORAGE
Check your outboard motor as described in the BEFORE OPERATION chapter of this manual.
If the cylinder was coated with oil during storage preparation, the engine may smoke briefly at startup. This is normal.

WITH OUTBOARD MOTOR INSTALLED ON BOAT
When using the portable fuel tank (BF5D and BF6A), turn the portable fuel tank vent knob counterclockwise to the open position (p. 26), disconnect the fuel hose connectors from the outboard motor and portable fuel tank (p. 40), install fuel hose connector cap and close the portable fuel tank vent by turning the vent knob clockwise all the way (p. 26).
Drain the internal fuel tank and carburetor as described on p. 85, turn the fuel valve lever to the OFF position (BF4A) or portable fuel tank position (BF5D and BF6A) (p. 19), close the internal fuel tank vent by turning the vent knob clockwise all the way (p. 21), move the shift lever to the R (reverse) position to lock the tilt system and tighten the steering friction bolt securely (p. 54).

The preferred method is to leave the engine in the normal running position, but if there is insufficient road clearance, you can tilt the outboard motor using a commercially available outboard motor support bar available through your dealer. Refer to the manufacturer’s instructions for using an outboard motor support bar.
OUTBOARD MOTOR SUPPORT BAR (commercially available)

TRANSPORTING
89

TRANSPORTING

WITH OUTBOARD MOTOR REMOVED FROM BOAT
Disconnect the battery charge cable (equipped type) (p. 29).
When using the portable fuel tank (BF5D and BF6A), turn the portable fuel tank vent knob counterclockwise to the open position (p. 26), disconnect the fuel hose connectors from the outboard motor and portable fuel tank (p. 40), install fuel hose connector cap and turn the portable fuel tank vent knob clockwise all the way (p. 26).
Drain the internal fuel tank and carburetor as described on p. 85, turn the fuel valve lever to the OFF position (BF4A) or portable fuel tank position (BF5D and BF6A) (p. 19), close the internal fuel tank vent by turning the vent knob clockwise all the way (p. 21), move the shift lever to the R (reverse) position to lock the tilt system and tighten the steering friction bolt securely (p. 54).
90

Remove the outboard motor from the boat and secure the outboard motor in either the vertical or horizontal position shown on p. 88.
CARRYING HANDLE

To carry, hold the outboard motor by the carrying handle, or hold by the carrying handle and the lug beneath the engine under cover, as shown.
Lifting the outboard motor by the engine cover, or using the installed outboard motor as a handle or lever to move the boat, can damage the outboard motor.

TAKING CARE OF UNEXPECTED PROBLEMS

ENGINE WILL NOT START
Possible Cause Clip not inserted in emergency stop switch. Gearshift lever not in neutral position. Choke OFF.
Throttle grip not in START position. Engine ran out of fuel.
Engine is at negative trim angle.

Correction

Insert clip in emergency stop switch.

Shift to neutral (p. 41).

Pull choke knob to ON position, unless engine is warm (p. 44).

Turn throttle grip to START position (p. 44).

Refill fuel tank (p. 71). Perform the priming procedure after refilling the tank (p. 37). Pull choke knob (p. 44).

Tilt the engine up to the first shallow water drive position (p. 56). Return engine to normal operating position after starting (p. 57).

Starting

After Starting

18°
91

TAKING CARE OF UNEXPECTED PROBLEMS

ENGINE WILL NOT START

Possible Cause

Correction

Out of fuel.

Refuel (p. 71).

Fuel valve lever is not turned to the appropriate position.
Fuel vent closed (internal fuel tank).
When using the portable fuel tank (BF5D and BF6A), fuel vent closed (portable fuel tank). When using the portable fuel tank (BF5D and BF6A), fuel hose not primed.

Turn the fuel valve lever to the appropriate position (p. 19). Turn the internal fuel tank vent knob counterclockwise to the open position (p. 21). Turn the portable fuel tank vent knob counterclockwise to the open position (p. 26).
Squeeze priming bulb (p. 40).

Fuel filter or fuel tank filter restricted.

Replace restricted f ilters (p. 75 or 77).

Bad fuel; outboard motor stored without treating or draining gasoline, or refueled with bad gasoline.
Spark plug faulty, fouled, or improperly gapped.
Spark plug wet with fuel (flooded engine).
Carburetor malfunction, fuel pump failure, ignition malfunction, stuck valves, etc.

Drain fuel tank and carburetor (p. 85). Ref ill with fresh gasoline (p. 71).
Adjust the spark plug electrode gap or replace spark plug (p. 70).
Dry and reinstall spark plug. Start engine with choke and throttle open.
Take outboard motor to an authorized Marine dealer, or refer to the shop manual.

TAKING CARE OF UNEXPECTED PROBLEMS

HARD STARTING OR STALLS AFTER STARTING

Possible Cause

Correction

Choke OFF.

Pull choke knob to ON position, unless engine is warm (p. 44).

Throttle grip not in START position.

Turn throttle grip to START position (p. 44).

Fuel filter or fuel tank filter restricted.

Replace restricted f ilters (p. 75 or 77).

Bad fuel; outboard motor stored without treating or draining gasoline, or refueled with bad fuel.

Drain fuel tank and carburetor (p. 85). Ref ill with fresh gasoline (p. 71).

TAKING CARE OF UNEXPECTED PROBLEMS

HARD STARTING OR STALLS AFTER STARTING Possible Cause
Spark plug faulty, fouled, or improperly gapped. Carburetor malfunction, fuel pump failure, ignition malfunction, etc.

Correction
Adjust the spark plug electrode gap or replace spark plug (p. 70). Take outboard motor to an authorized Marine dealer, or refer to the shop manual.

ENGINE OVERHEATS Possible Cause
Water intakes clogged. Faulty thermostat or water pump.

Correction
Clean water intakes. Take outboard motor to an authorized Marine dealer, or refer to the shop manual.

TAKING CARE OF UNEXPECTED PROBLEMS

ENGINE WILL NOT DRIVE THE PROPELLER Possible Cause
Broken shear pin. Damaged gearshift mechanism.

Correction
Replace shear pin (p. 79). Take outboard motor to an authorized Marine dealer, or refer to the shop manual.

TAKING CARE OF UNEXPECTED PROBLEMS

BATTERY WILL NOT CHARGE (Equipped type)
The battery-charging circuit is protected by the 15-ampere fuse.
Fuse Replacement
1. Stop the engine.

2. Remove and inspect the fuse. If a fuse is burnt out, install a replacement fuse of the specified rating. The outboard motor is supplied with a spare fuse in fuse holder.
DESIGNATED FUSE RATING: 15A
Never use a fuse with a rating greater than specified. Serious damage to the electrical system could result.
SPARE FUSE

BLOWN FUSE
3. Reinstall the fuse case lid.
Before further operation, try to determine and correct the electrical problem that caused the fuse to burn out. An uncorrected electrical problem may cause the fuse to burn out again.

FUSE HOLDER FUSE FUSE CASE LID

TAKING CARE OF UNEXPECTED PROBLEMS

OIL PRESSURE INDICATOR GOES OFF AND ENGINE SPEED IS LIMITED
OIL PRESSURE INDICATOR

If oil pressure becomes low, the green indicator will go off. If you are at cruising speed, engine speed will decrease gradually.
Low oil pressure may be the result of a low engine oil level, or there may be a problem with the engine lubrication system.
If the throttle is closed suddenly after full throttle operation, engine speed may drop below the specif ied idle rpm, and that could activate the engine protection system momentarily.

If low oil pressure activates the engine protection system, stop the engine, check the engine oil level (p. 64), and add oil if needed.
With the engine oil at the recommended level, restart the engine. If the lubrication system is OK, the green indicator should come on within 30 seconds, and the engine will respond normally to throttle grip operation.
If the engine protection system remains activated after 30 seconds, return to the nearest boat landing, and have the outboard motor inspected by an authorized Marine dealer.

TAKING CARE OF UNEXPECTED PROBLEMS

SUBMERGED OUTBOARD MOTOR
A submerged outboard motor must be serviced immediately after it is recovered from the water in order to minimize corrosion.
If there is a Honda Marine dealership nearby, take the outboard motor to the dealer immediately. If you are far from a dealer, proceed as follows:
1. Unlock and remove the engine cover (p. 63), and rinse the outboard motor with fresh water to remove salt water, sand, mud, etc.
2. Drain the internal fuel tank and carburetor as described on p. 85.

3. Change the engine oil as described on p. 65. If there was water in the engine crankcase, or if the used engine oil showed signs of water contamination, then a second engine oil change should be performed after running the engine for half an hour.
STARTER GRIP

4. Remove the spark plug (p. 70), and remove the emergency stop switch clip from the emergency stop switch. Pull the starter grip, rotate the flywheel a few revolutions to completely expel any water from the cylinder.
If the engine was running when it submerged, there may be mechanical damage, such as a bent connecting rod. If the engine binds when cranked, do not attempt to run the engine until it has been repaired.
When cranking the engine with an open ignition circuit (spark plug removed from the ignition circuit), remove the emergency stop switch clip from the emergency stop switch to prevent possible damage to the ignition system.

TAKING CARE OF UNEXPECTED PROBLEMS

5. Pour a teaspoon (5 – 10 cm3) of engine oil into the spark plug hole, and then pull the starter grip several times to lubricate the inside of the cylinder.
6. Reinstall the spark plug, and put the emergency stop switch clip into the emergency stop switch.

7. Attempt to start the engine. Be sure the water level is at least 2 inches (5 cm) above the antiventilation plate.
If the engine fails to start, remove the spark plug, clean and dry it, then reinstall the spark plug and attempt to start the engine again.
If the engine starts, and no mechanical damage is evident, continue to run the engine for a half hour or longer. Be sure the water level is at least 2 inches (5 cm) above the antiventilation plate to avoid overheating and water pump damage.
8. As soon as possible, take the outboard motor to an authorized Marine dealer for inspection and service.

TECHNICAL INFORMATION

Serial Number Locations
Record the frame serial number, the engine serial number, and the date of purchase in the space provided on this page. You will need these numbers when ordering parts, and when making technical or warranty inquiries (p. 110).

ENGINE SERIAL NUMBER

FRAME SERIAL NUMBER

The frame serial number is stamped on a plate attached on the left side of the stern bracket. The engine serial number is located on the left side of the engine. Frame serial number:
Date of purchase:
Engine serial number:

100

TECHNICAL INFORMATION

Carburetor Modification for High Altitude Operation
At altitudes above 3,000 feet (900 meters), the standard carburetor air-fuel mixture will be too rich. Performance will decrease, and fuel consumption will increase. A very rich mixture will also foul the spark plug and cause hard starting. Operation at an altitude that differs from that at which this engine was certified, for extended periods of time, may increase emissions.
High altitude operation can be improved by specif ic modif ications to the carburetor. If you usually operate your outboard motor at 3,000 feet (900 meters) or above, consult with your authorized Honda Marine dealer. Your dealer can determine the appropriate carburetor settings for the altitude at which you operate your outboard motor.

Even with carburetor modification, engine horsepower will decrease about 3.5% for each 1,000-foot (300-meter) increase in altitude. The effect of altitude on horsepower will be greater than this if no carburetor modification is made.
When the carburetor has been modified for operation at one of the higher altitude ranges, the air-fuel mixture will be too lean for operation at a lower altitude. Operation at altitudes below the range for which the carburetor is set may cause the engine to overheat and result in serious engine damage. For use at lower altitudes, have an authorized Marine dealer modify the carburetor for the correct altitude range.

Battery (Equipped type)
For complete information, refer to the battery manufacturer’s instructions.
Minimum Requirements
12V-28Ah/5HR (CCA 265)

101

TECHNICAL INFORMATION

Emission Control System Information
Source of Emissions
The combustion process produces carbon monoxide, oxides of nitrogen, and hydrocarbons. Control of hydrocarbons and oxides of nitrogen is very important because, under certain conditions, they react to form photochemical smog when subjected to sunlight. Carbon monoxide does not react in the same way, but it is toxic.
Honda utilizes appropriate air/fuel ratios and other emissions control systems to reduce the emissions of carbon monoxide, oxides of nitrogen, and hydrocarbons.

The U.S., California Clean Air Acts, and Canadian Environmental Protection Act
EPA, California, and Canadian regulations require all manufacturers to furnish written instructions describing the operation and maintenance of emission control systems.
The following instructions and procedures must be followed in order to keep the emissions from your Honda engine within the emission standards.

Tampering and Altering
Tampering is a violation of Federal and California law.
Tampering with or altering the emission control system may increase emissions beyond the legal limit. Among those acts that constitute tampering are:
· Removal or alteration of any part of the intake, fuel, or exhaust systems.
· Alterations that would cause the engine to operate outside its design parameters.

102

TECHNICAL INFORMATION

Problems That May Affect Emissions
If you are aware of any of the following symptoms, have your engine inspected and repaired by your servicing dealer.
· Hard starting or stalling after starting.
· Rough idle.
· Misfiring or backfiring under load.
· Afterburning (backf iring).
· Black exhaust smoke or high fuel consumption.

Replacement Parts
The emission control systems on your Honda engine were designed, built, and certif ied to conform with EPA and California emission regulations. To ensure the best quality and reliability, use only new, Honda Genuine parts or their equivalents for repair and replacement. Maintenance, replacement, or repair of the emission control devices and systems may be performed by any marine engine repair establishment or individual, using parts that are “certified” to EPA standards.

A manufacturer of an aftermarket part assumes the responsibility that the part will not adversely affect emission performance. The manufacturer or rebuilder of the part must certify that use of the part will not result in a failure of the engine to comply with emission regulations.
Maintenance
Follow the maintenance schedule on (p. 61 and 62). Remember that this schedule is based on the assumption that your machine will be used for its designed purpose. Sustained high-load operation, or use in unusual conditions, will require more frequent service.

103

TECHNICAL INFORMATION

Star Label
US, Puerto Rico, and US Virgin Islands

The Star Label means Cleaner Marine Engine
This engine has been certified as a:

A Star label was applied to this outboard motor in accordance with the requirements of the California Air Resources Board.

The Symbol for Cleaner Marine Engines:
Cleaner Air and Water – for healthier lifestyle and environment.
Better Fuel Economy – burns up to 30 – 40 percent less gas and oil than conventional carbureted two-stroke engines, saving money and resources.
Longer Emission Warranty – protects consumer for worry-free operation.

104

TECHNICAL INFORMATION

One Star Low Emission
Two Stars Very Low Emission
Three Stars Ultra Low Emission
Four Stars Super Ultra Low Emission

The one-star label identif ies engines that meet the Air Resources Board’s Personal Watercraft and Outboard marine engine 2001 exhaust emission standards. Engines meeting these standards have 75% lower emissions than conventional carbureted two-stroke engines. These engines are equivalent to the U.S. EPA’s 2006 standards for marine engines.
The two-star label identif ies engines that meet the Air Resources Board’s Personal Watercraft and Outboard marine engine 2004 exhaust emission standards. Engines meeting these standards have 20% lower emissions than One Star-Low Emission engines.
The three-star label identif ies engines that meet the Air Resources Board’s Personal Watercraft and Outboard marine engine 2008 exhaust emission standards or the Sterndrive and Inboard marine engine 2003-2008 exhaust emission standards. Engines meeting these standards have 65% lower emissions than One Star-Low Emission engines.
The four-star label identif ies engines that meet the Air Resources Board’s Sterndrive and Inboard marine engine 2009 exhaust emission standards. Personal Watercraft and Outboard marine engines may also comply with these standards. Engines meeting these standards have 90% lower emissions than One Star-Low Emission engines.
Cleaner Watercraft – Get the Facts 1-800-END-SMOG www.arb.ca.gov
105

TECHNICAL INFORMATION

Specif ications

MODEL Description code Type Overall length Overall width
Overall height
Transom height (when transom angle at 14°) Dry mass [weight] *1 Rated power Full throttle range Engine type Displacement Spark plug gap Starter system Ignition system Lubrication system Specified oil
Oil capacity
CARB star label Cooling system

SHNA
40.7 in (1,033 mm)
17.1 in (434 mm)

BF4AH

BACC

LHNA

SHNC

20.6 in (524 mm)

13.7 in (347 mm)

45.7 in

40.7 in

(1,160 mm) (1,033 mm)

22.1 in

17.1 in

(561 mm) (434 mm)

LHNC
45.7 in (1,160 mm)
22.1 in (561 mm)

59.5 lbs

60.6 lbs

59.5 lbs

60.6 lbs

(27.0 kg) (27.5 kg) (27.0 kg) (27.5 kg)

3.0 kW (4 HP)

4,500 5,500 rpm

4 stroke OHV 1 cylinder, water-cooled

7.7 cu-in (127 cm3)

0.024 – 0.028 in (0.6 – 0.7 mm)

Recoil starter

C.D.I.

Trochoid pump pressure lubrication

Engine: API standard (SG, SH or SJ oil)

SAE 10W-30

Gear case: API standard (GL-4)

SAE 75W-90 or 90 Hypoid gear oil

Engine: 18 US oz (0.55 L, 0.48 Imp qt)

Gear case: 3 US oz (0.10 L, 0.09 Imp qt)

ULTRA LOW EMISSION

Water cooling with thermostat

1 Without charge coil, with propeller 2 Optional Equipment

Exhaust system D.C. output *2 Spark plug Fuel pump Fuel
Tank capacity Gear change Steering angle Transom angle Tilt up angle (when transom angle at 12°) Standard propeller (No. of blades diameter × pitch)

Underwater exhaust 12V – 6A
BKR6E-E (NGK) Mechanical type fuel pump
Unleaded gasoline (86 pump octane or higher) 0.40 US gal (1.5 L, 0.33 Imp gal) Forward-Neutral-Reverse (dog type)
45° right and left 5 stages (4°,8°,12°,16°,20°)
3 stages adjustment (18°, 34° and 58°)
3 200 × 150 mm (3 7-7/8 × 5-7/8 in)

Tuneup
Spark plug gap
Idle speed
Valve clearance (cold) Other specif ications

0.024 – 0.028 in

See page 70

(0.6 – 0.7 mm)

1,550 + 100 rpm

See shop

manual

Intake: 0.10 + 0.04 mm

See shop

Exhaust: 0.15 + 0.04 mm

manual

No other adjustment is needed

Honda outboard motors are power rated in accordance with NMMA procedures and using the ICOMIA standard 28/23.
106

TECHNICAL INFORMATION

Specif ications

MODEL Description code Type Overall length Overall width
Overall height

BF5DH BADC SHNA LHNA SHNC LHNC SHC LHC 20.6 in (524 mm) 13.7 in (347 mm) 40.7 in 45.7 in 40.7 in 45.7 in 40.7 in 45.7 in
(1,033 mm) (1,160 mm) (1,033 mm) (1,160 mm) (1,033 mm) (1,160 mm)

Exhaust system D.C. output *3 Spark plug Fuel pump Fuel

Transom height

17.1 in 22.1 in 17.1 in 22.1 in 17.1 in 22.1 in

(when transom angle at 14°)

(434 mm) (561 mm) (434 mm) (561 mm) (434 mm) (561 mm)

Tank capacity

Dry mass [weight] Rated power

59.5 lbs1 60.6 lbs1 59.5 lbs1 60.6 lbs1 61.3 lbs2 62.4 lbs2 (27.0 kg) (27.5 kg) (27.0 kg) (27.5 kg) (27.8 kg) (28.3 kg)
3.7 kW (5 HP)

Gear change Steering angle

Full throttle range

4,500 5,500 rpm

Transom angle

Engine type Displacement

4 stroke OHV 1 cylinder, water-cooled 7.7 cu-in (127 cm3)

Tilt up angle (when transom angle at 12°)

Spark plug gap Starter system Ignition system

0.024 – 0.028 in (0.6 – 0.7 mm) Recoil starter C.D.I.

Standard propeller (No. of blades diameter × pitch)

Lubrication system

Trochoid pump pressure lubrication

Specified oil

Engine: API standard (SG, SH or SJ oil)

Tuneup

SAE 10W-30

Spark plug gap

Gear case: API standard (GL-4)

SAE 75W-90 or 90 Hypoid gear oil

Idle speed

Oil capacity

Engine: 18 US oz (0.55 L, 0.48 Imp qt)

Gear case: 3 US oz (0.10 L, 0.09 Imp qt)

Valve clearance

CARB star label

ULTRA LOW EMISSION

(cold)

Cooling system

Water cooling with thermostat

Other specif ications

*1 Without charge coil, with propeller

*2 With charge coil and propeller

*3 SHNA, LHNA, SHNC and LHNC types are Optional Equipment

Underwater exhaust 12V – 6A
BKR6E-E (NGK) Mechanical type fuel pump
Unleaded gasoline (86 pump octane or higher)
Internal fuel tank: 0.40 US gal (1.5 L, 0.33 Imp gal)
Portable fuel tank: 3.2 US gal (12 L, 2.6 Imp gal) Forward-Neutral-Reverse (dog type)
45° right and left 5 stages (4°,8°,12°,16°,20°)
3 stages adjustment (18°, 34° and 58°)
3 200 × 170 mm (3 7-7/8 × 6-3/4 in)

0.024 – 0.028 in

See page 70

(0.6 – 0.7 mm)

1,550 + 100 rpm

See shop

manual

Intake: 0.10 + 0.04 mm

See shop

Exhaust: 0.15 + 0.04 mm

manual

No other adjustment is needed

Honda outboard motors are power rated in accordance with NMMA procedures and using the ICOMIA standard 28/23.
107

TECHNICAL INFORMATION

Specif ications

MODEL

BF6AH

Description code

BAEC

Type

SHNA

LHNA

SHC

LHC

Overall length

20.6 in (524 mm)

Overall width

13.7 in (347 mm)

Overall height

40.7 in

45.7 in

40.7 in

45.7 in

(1,033 mm) (1,160 mm) (1,033 mm) (1,160 mm)

Transom height

17.1 in

22.1 in

17.1 in

22.1 in

(when transom

(434 mm) (561 mm) (434 mm) (561 mm)

angle at 14°)

Dry mass [weight]

59.5 lbs*1 (27.0 kg)

60.6 lbs*1 (27.5 kg)

61.3 lbs*2 (27.8 kg)

62.4 lbs*2 (28.3 kg)

Rated power

4.5 kW (6 HP)

Full throttle range

5,000 6,000 rpm

Engine type

4 stroke OHV 1 cylinder, water-cooled

Displacement

7.7 cu-in (127 cm3)

Spark plug gap

0.024 – 0.028 in (0.6 – 0.7 mm)

Starter system

Recoil starter

Ignition system

C.D.I.

Lubrication system

Trochoid pump pressure lubrication

Specified oil

Engine: API standard (SG, SH or SJ oil)

SAE 10W-30

Gear case: API standard (GL-4)

SAE 75W-90 or 90 Hypoid gear oil

Oil capacity

Engine: 18 US oz (0.55 L, 0.48 Imp qt)

Gear case: 3 US oz (0.10 L, 0.09 Imp qt)

CARB star label

ULTRA LOW EMISSION

Cooling system

Water cooling with thermostat

1 Without charge coil, with propeller 2 With charge coil and propeller *3 SHNA and LHNA types are Optional Equipment

Exhaust system D.C. output *3 Spark plug Fuel pump Fuel
Tank capacity
Gear change Steering angle Transom angle Tilt up angle (when transom angle at 12°) Standard propeller (No. of blades diameter × pitch)

Tuneup
Spark plug gap
Idle speed
Valve clearance (cold) Other specif ications

0.024 – 0.028 in

See page 70

(0.6 – 0.7 mm)

1,550 + 100 rpm

See shop

manual

Intake: 0.10 + 0.04 mm

See shop

Exhaust: 0.15 + 0.04 mm

manual

No other adjustment is needed

Honda outboard motors are power rated in accordance with NMMA procedures and using the ICOMIA standard 28/23.
108

CONSUMER INFORMATION

Dealer Locator Information
To find an authorized Honda Servicing Dealer
For USA: Visit our website: http://marine.honda.com and click on Find a Dealer
For Canada: Call 1-888-946-6329 or visit our website: English http://marine.honda.ca/dealerlocator French http://marine.honda.ca/ trouver-concessionaire
Honda Publications
These publications will give you additional information for maintaining and repairing your outboard motor.

Shop Manual
This manual covers complete maintenance and overhaul procedures. It is intended to be used by a skilled technician.
For USA: Shop manuals are available through your Honda Marine dealer or visit http://marine.honda.com /Service & Support and click on Shop Manuals
For Canada: Contact your dealer for information on the Shop Manual.
Parts Catalog
For USA: This manual provides complete, illustrated parts lists. The catalog is available through your Honda Marine dealer or visit http://marine.honda.com/Parts & Accessories and click on Look Up Parts

For Canada: Contact your dealer for information on Parts.
Accessory Catalog
Your authorized Honda Marine dealer offers a wide selection of accessories (optional equipment, oils, and lubricants) to enhance your boating experience.
For USA: Visit http://marine.honda.com and click on PARTS & ACCESSORIES to see the entire catalog of accessories.
For Canada: Check with your dealer or visit www.honda.ca and select the Parts and Accessories tab under the Honda Marine segment to view the range of accessories available.

109

CONSUMER INFORMATION

Customer Service Information
Contacting Honda
Your Owner’s Manual was written to cover most of the questions you might ask about your Honda. Any questions not answered in the Owner’s Manual can be answered by your Honda dealer. If your dealer doesn’t have an immediate answer, they should be able to get it for you.
If you have a difference of opinion with your dealer, please remember that each dealership is independently owned and operated. That’s why it’s important to work to resolve any differences at the dealership level. If the service personnel are unable to assist you, please discuss your concerns with the dealer management such as the Service Manager or the dealership’s owner.

If you need to contact Honda regarding your experiences with your Honda product or with your dealer, please contact the Honda office in your region:
American Honda Motor Co., Inc. Marine Division Customer Relations Office 4900 Marconi Drive Alpharetta, GA 30005-8847 Telephone (770) 497 6400 M-F 9:00 am-7:30 pm (Eastern Time Zone)
In Canada: Honda Canada Inc. Customer Relations Department 180 Honda Boulevard Markham, Ontario L6C 0H9 Tel: 1-888-946-6329 (Toll free) Fax: 1-877-939-0909 (Toll free)
Please include the following information in your communication:

· Your name, address and telephone number (complete with area code)
· Model and complete serial number · Date of purchase · Name and location of selling dealer · Name and location of servicing
dealer (if different) · A detailed description of your
concerns
We will likely ask your Honda dealer to respond, or possibly acknowledge your comments directly.
Warranty Coverage
Your new Honda is covered by the following warranties: · Distributor’s Limited Warranty · Emission Control System Warranty
Please read the warranty statements contained in this manual. There are responsibilities, restrictions, and exclusions that apply to these warranties.

110

CONSUMER INFORMATION

To obtain warranty service you must take your Honda outboard motor, together with proof of original retail purchase date, at your expense, to a Honda engine dealer or distributor authorized to sell that product in the United States, Puerto Rico, the U.S. Virgin Islands or Canada.
It is important to realize that your warranty applies to defects in material or workmanship of your Honda. Your warranty coverage does not apply to normal wear or deterioration associated with using your Honda outboard motor.
Your warranty coverage will not be voided if you choose to perform your own maintenance. However, you should have the proper tools and service information and be mechanically qualified. Failures that occur due to modifications, improper maintenance, or service are not covered.

Warranty Service
Please remember that recommended maintenance interval servicing is not included in your warranty coverage. Additionally, your warranty does not apply to the normal wear of items (such as spark plug(s), water pump, etc.).
As the owner of a Honda product, your servicing dealer may ask you to authorize an inspection. If the problem is covered under warranty, your dealer will perform any warranty repairs for you at no cost. However, you may be responsible for additional non-warranty charges.
If you have questions about warranty coverage or the nature of the repair, it is best to talk to the service manager of your Honda dealer.

Sometimes, in spite of the best intentions of all concerned, a misunderstanding may occur. If you aren’t satisfied with your dealer’s handling of the situation, we suggest you discuss your problem with the appropriate member of the dealership’s management team. If the problem has already been reviewed with the appropriate manager of the Service, Parts, or Sales department, contact the owner of the dealership or their designated representative.

111

CONSUMER INFORMATION

Warranty Statements
The American Honda Distributor’s Limited Warranty applies to outboards purchased in the United States, Puerto Rico, or the U.S. Virgin Islands. The Honda Canada Distributor’s Warranty applies to outboards purchased in Canada. The product warranty is only valid in the country where the product was purchased.
United States, Puerto Rico and U.S. Virgin Islands

Distributor’s Limited Warranty
This warranty is limited to Honda Outboard Motors and related original equipment distributed by American Honda Motor Co., Inc., Power Sports and Products Division, 4900 Marconi Drive, Alpharetta, Georgia 30005-8847.

Products Covered by Warranty:
All models purchased on or after Jan. 1, 2016 (2) All models purchased between July 1, 2008 and December 31, 2015 (2) All models purchased on or before June 30, 2008 (1)(2) Related original equipment items: BF5 through BF20 models: Portable fuel tank and original propeller. All models: Primer bulb/fuel line assembly and tiller handle.

Length of Warranty: (from date of original retail purchase)

NON-COMMERCIAL/ COMMERCIAL/RENTAL STATE/LOCAL/FEDERAL

NON-RENTAL

GOVERNMENT

60 months

24 months

36 months

60 months

12 months

24 months

36 months

12 months

24 months

The same duration as the outboard with which they were purchased.(3)

(1) Models purchased prior to July 1, 2008 (unless previously purchased with True-5 warranty from a participating dealer). (2) 40, 65, & 105 Jet models: Jet pump assembly is a dealer installed option. Jet pump warranty is provided by Specialty Manufacturing Co. (Outboard Jets). (3) Portable fuel tanks: 24 months or the same duration as the outboard they were purchased with, whichever is longer.

112

CONSUMER INFORMATION

To Qualify for This Warranty: The Honda Outboard Motor must be purchased from American Honda or a dealer authorized by American Honda to sell Honda Outboard Motors in the United States, Puerto Rico, or the U.S. Virgin Islands. This limited warranty applies to the f irst retail purchaser and each subsequent owner during the applicable warranty time period.
What American Honda Will Repair or Replace Under Warranty: American Honda will repair or replace, at its option, any part that is proven to be defective in material or workmanship under normal use during the applicable warranty time period. Warranty repairs and replacements will be made without charge for parts or labor. Anything replaced under warranty becomes the property of American Honda Motor Co., Inc.
All parts replaced under warranty will be considered as part of the original product and any warranty on those parts will expire coincidentally with the original product warranty.

To Obtain Warranty Service:
You must, at your expense, take your Honda Outboard Motor and proof of the original purchase date to any dealer who is authorized to service Honda Outboard Motors in the United States, Puerto Rico, or the U.S. Virgin Islands, during the dealer’s normal business hours. If you are unable to obtain warranty service, or are dissatisfied with the warranty service you receive, take the following steps: First, contact the owner of the dealership involved; normally this should resolve the problem. However, if you should require further assistance, write or call the Honda Marine Customer Relations Department of American Honda Motor Co., Inc. Please see Contacting Honda on page 110.

113

CONSUMER INFORMATION

Exclusions: This warranty does not extend to the following: · Conditions caused by lack of routine maintenance or
improper storage (as outlined in the owner’s manual) · Conditions caused by the use of propeller (s) that do not
allow the outboard motor to run in its recommended full throttle rpm range · Operation inconsistent with the recommended operation/duty cycle (as outlined in the owner’s manual) · Parts affected or damaged by an abuse, submersion and/or collision · Fuel contamination and water entering the engine through the fuel intake, air intake or exhaust system · Operation with fuels, oils, additives and lubricants which are not suitable for use in the product · Use in an application for which the outboard motor was not designed, such as racing or competitive use or any other misuse or neglect · Normal wear and tear · Incorporation of unsuitable attachments or parts · The unauthorized alteration, improper installation and/or rigging, or any causes other than defects in material or workmanship · Corrosion to steering system or electrical components, corrosion due to electrolysis, water born foreign chemicals, improper service or corrosion caused by damage or abuse

· Reimbursement for towing charges, in and out of water charges, or technician travel time
· Growth of marine organisms on motor surfaces, external or internal
· Any product that has ever been declared a total loss or sold for salvage by a f inancial institution or insurer, or that has been issued a “salvage” or similar title under any state’s law.
Disclaimer of consequential damage and limitation of implied warranties: American Honda disclaims any responsibility for loss of time or use of the outboard, revenue, or the equipment in which the outboard is installed, transportation, commercial loss, or any other incidental or consequential damage. Any implied warranties are limited to the duration of this written limited warranty. Some states do not allow limitations on how long an implied warranty lasts and/or do not allow the exclusion or limitation of incidental or consequential damages, so the above exclusions and limitations may not apply to you. This warranty gives you specif ic legal rights, and you may also have other rights which vary from state to state.

114

CONSUMER INFORMATION

Accessories and Replacement Parts This warranty is limited to Honda Marine parts, accessories and apparel when distributed by American Honda Motor
Co., Inc., 4900 Marconi Drive, Alpharetta, Georgia 30005-8847.

Products Covered by Warranty:
Accessories other than noted below

Length of Warranty: (from date of original retail purchase)

NON-COMMERCIAL COMMERCIAL/RENTAL STATE/LOCAL/FEDERAL

GOVERNMENT

12 months

3 months

Emission related accessories: Portable fuel tanks, fuel line assemblies, and water/fuel separators Replacement Parts

24 months 6 months

24 months 3 months

To Qualify for This Warranty: 1. The accessories or replac

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HONDA MARINE BF4A Includes US And Canadian Models

Specifications

Product Usage Instructions

FAQs

INTRODUCTION

IMPORTANT SAFETY INFORMATION

CONTROLS AND FEATURES

INSTALLATION

OPERATION

MAINTENANCE SAFETY

SERVICING YOUR OUTBOARD MOTOR

CLEANING AND FLUSHING

STORAGE

TRANSPORTING

TAKING CARE OF UNEXPECTED PROBLEMS

TECHNICAL INFORMATION

CONSUMER INFORMATION

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