BRIGGS STRATTON Sprint 475 Series Gasoline Lawn Mower Engine User Manual
- June 13, 2024
- BRIGGS STRATTON
Table of Contents
Sprint 475 Series Gasoline Lawn Mower Engine
Product Information
The product is a model 90000 Classic 450 Series, Sprint 475
Series, Quattro 475 Series, Model 100000, Sprint Quattro LX SQ Q,
500 Series. It is manufactured by Briggs & Stratton
Corporation.
The product is an engine and does not specify the equipment it
will power. Therefore, it is important to read the instructions for
both the engine and the equipment it will be used with.
The user manual contains safety information to inform users
about the hazards and risks associated with engines. It includes
symbols to represent various hazards and types of information
related to the engine.
Briggs & Stratton does not approve or authorize the use of
these engines on 3-wheel All Terrain Vehicles (ATVs), motor bikes,
fun/recreational go-karts, aircraft products, or vehicles intended
for use in competitive events. Using these engines in such
applications could result in property damage, serious injury
(including paralysis), or even death.
The engine exhaust from this product contains chemicals known to
the State of California to cause cancer, birth defects, or other
reproductive harm.
It is important to note that the engine is shipped from Briggs
& Stratton without oil. Starting the engine without oil will
cause irreparable damage and will not be covered under
warranty.
The user manual also provides information about the various
parts of the engine, such as the starter handle, fuel fill
carburetor, primer bulb, air cleaner, governor control lever (if
equipped), spark plug wire, oil fill/dipstick, muffler/muffler
guard (if equipped)/spark arrester (if equipped), and oil drain
plug.
Product Usage Instructions
-
Before starting the engine, read the Operating Manual.
-
Add oil to the engine using the following steps:
-
Use high quality SAE 30 detergent oil rated SF, SG, SH, or
higher. -
Pour oil into the engine until it reaches the FULL line on the
dipstick. The engine holds about 18 oz of oil. -
Unscrew and remove the oil cap.
-
Pour the oil into the engine.
-
Replace the oil cap.
-
Do not overfill or tip the engine.
-
Refer to page 9 of the manual for more details.
-
Wipe the dipstick, then replace and tighten the cap.
-
Remove the dipstick to read the oil level.
Operator’s Manual
Model 90000 Classic 450 Series
Sprint 475 Series
Quattro 475 Series
Model 100000
Sprint Quattro LX SQ Q
500 Series 500 Series 500 Series 500 Series 500/550 Series
Quick Start Guide
on page 4
BRIGGSandSTRATTON.com
ECopyright Briggs & Stratton Corporation Milwaukee, Wisconsin 53201 U.S.A.
Form No. 277038-9/06 Printed in U.S.A.
Safety References
The safety alert symbol ( ) is used to identify safety information about
hazards that can result in personal injury. A signal word (DANGER, WARNING, or
CAUTION) is used with the alert symbol to indicate the likelihood and the
potential severity of injury. In addition, a hazard symbol may be used to
represent the type of hazard.
DANGER indicates a hazard which, if not
avoided, will result in death or serious injury.
WARNING indicates a hazard which, if not
avoided, could result in death or serious injury.
CAUTION indicates a hazard which, if not
avoided, might result in minor or moderate injury.
CAUTION, when used without the alert
symbol, indicates a situation that could result in damage to the engine.
This manual contains safety information to make you aware of the hazards and
risks associated with engines. Because Briggs & Stratton does not necessarily
know what equipment this engine will power, it is important that you read the
instructions and the instructions for the equipment this engine powers.
SYMBOLS ASSOCIATED WITH THIS ENGINE:
Read
Fire
Operating
Manual
Explosion
Oil
Kickback Hot Surface
Fuel Fuel Shutoff
Toxic Fumes
On Off
Moving Parts
Run
Shock
Hazardous Chemical
Choke Stop
Table of Contents Safety References . . . . . . . . . . . . . . . . . . . . . 2 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Quick Start Guide . . . . . . . . . . . . . . . . . . . . . 4 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . 6 Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Operating & Stopping . . . . . . . . . . . . . . . . . 8 Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Specifications & Emission Information 12 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . 13 Storage & Service . . . . . . . . . . . . . . . . . . . 16 Warranty Information . . . . . . . . . . . . . . . . 17
Slow
Fast
WARNING
Briggs & Stratton does not approve or authorize the use of these engines on
3-wheel All Terrain Vehicles (ATVs), motor bikes, fun/recreational go-karts,
aircraft products or vehicles intended for use in competitive events. Use of
these engines in such applications could result in property damage, serious
injury (including paralysis), or even death.
WARNING
The engine exhaust from this product contains chemicals known to the State of
California to cause cancer, birth defects, or other reproductive harm.
CAUTION
This engine is shipped from Briggs & Stratton without oil. If you start the
engine without oil, the engine will be damaged beyond repair and will not be
covered under warranty.
Know Your Engine
Starter Handle
Fuel Fill Carburetor
Primer Bulb
Air Cleaner
Governor Control Lever (if equipped)
Spark Plug Wire
Oil Fill/Dipstick
Engine Model Type XXXXX XXXX XX Code XXXXXXXX
Muffler/Muffler Guard (if equipped)/Spark Arrester (if equipped)
Oil Drain Plug
3
This manual contains safety information to make you aware of the hazards and risks associated with engines. Read the Operating Manual before starting your engine.
1 2 34
ADD OIL
WHAT KIND ?
High quality SAE 30 detergent oil rated SF, SG, SH or higher.
HOW MUCH ?
To FULL line on dipstick. Engine holds about 18 oz.
HOW ?
Unscrew and remove oil cap. Pour in oil. Replace cap.
SPECIAL CONCERNS ?
Do not overfill. Do not tip enigine.
See page 9 for details.
WIPE DIPSTICK. REPLACE DIPSTICK AND TIGHTEN CAP. REMOVE DIPSTICK TO READ LEVEL.
FULL
1 2 34
ADD GAS
WHAT KIND ?
Unleaded, 85 octane or higher.
HOW MUCH ?
Fill to one inch below top of fuel fill neck.
HOW ?
Remove gas cap. Pour in gas. Replace cap.
SPECIAL CONCERNS ?
Fuel equipment outdoors. If fuel spills, wait until it evaporates before
starting engine.
See page 11 for details.
4
WARNING
Starting engine creates sparking. Gasoline and its vapors are extremely
flammable and explosive. Fire or explosion can cause severe burns or death.
If fuel spills, wait until it evaporates before starting engine.
DO NOT use pressurized starting fluids.
1 2 34
PUSH PRIMER
HOW MANY TIMES ? Press 5 times the FIRST TIME you start engine. For all future
starts, press 3 times.
HOW ?
Locate primer bulb. Press with finger. Wait two seconds between each press.
SPECIAL CONCERNS ?
Pressing primer too many times can flood engine with gas. A flooded engine
will not start. See Troubleshooting section.
1 2 34
PULL STARTER HANDLE
HOW ?
Stand behind equipment. Close bail, or operator control bar, on equipment with
this feature. If you do not keep bail held against equipment handle, engine
will not start. Slowly pull cord until you feel resistance, then pull quickly.
SPECIAL CONCERNS ?
If speed control equipped, start in FAST position. Also, see warning at right.
To Stop Engine –
Let go of brake release bar, which activates brake and stops engine from
running.
For complete starting instructions see page 7.
WARNING
Rapid retraction of starter cord (kickback) will pull hand and arm toward
engine faster than you can let go. To avoid kickback, slowly pull the cord
until you feel resistance, then pull rapidly.
Broken bones, fractures, bruises or sprains could result.
Rotating parts can contact or entangle hands, feet, hair, clothing, or
accessories.
Traumatic amputation or severe laceration can result.
Need assistance? 1-800-233-3723
(USA and Canada ONLY, Pre-recorded message.) www.briggsandstratton.com
5
Troubleshooting
Starter handle will not pull.
r The proper equipment handle is not engaged which releases the brake from the
flywheel allowing the engine to turn over.
r Place equipment on flat level surface.
· Ensure all external equipment/engine loads are removed before starting
engine. Direct coupled equipment components must be securely attached such as,
but not limited to, blades, impellers, pulleys, sprockets, etc.
WARNING
Engine will not start.
r Oil Level is OVER FULL mark on dipstick.
· Drain excess oil from engine to bring level to FULL mark on dipstick.
· Check air cleaner filter for oil saturation. If saturated, clean or replace
filter.
r Out of Fuel
· Add gasoline. · Prime engine.
r Engine Flooded
· Set choke (if equipped) to OPEN/RUN position, place throttle (if equipped)
in FAST and continue to pull starter handle.
r Spark Plug Fouling
· Remove spark plug. Clean, check gap, replace. See Maintenance section.
CAUTION
DO NOT OVERFILL. Overfilling may cause smoking, hard starting, spark plug
fouling or oil saturation of air filter.
WARNING
· Ensure fuel cap, and air cleaner are in place before starting engine.
· Before refueling – turn engine OFF and let engine cool at least 2 minutes
before removing gas cap.
· Check fuel lines, tank, cap, and fittings for cracks or leaks. Replace if
necessary.
· Do not crank engine with spark plug removed.
Engine emits smoke or running rough.
r Engine may have been tipped during transport.
· Check for fouled spark plug. · Check air cleaner filter for oil saturation.
If saturated, clean or replace filter.
CAUTION
If engine is tipped to transport equipment, to remove debris, to drain oil,
etc., keep the spark plug side of engine up.
KEEP SPARK PLUG UP
6
Starting
[1] Check oil level. Ensure level is at FULL mark on dipstick. Use the correct
oil type for expected starting temperature.
[2] Fill with fresh gasoline. Move throttle to FAST. (if equipped)
WARNING
· Make sure spark plug, muffler, fuel cap and air cleaner are in place.
· Do not crank engine with spark plug removed.
· DO NOT start engine if there is a natural or LP gas leak in area.
· Do not use pressurized starting fluids because vapors are flammable.
WARNING
· Start and run engine outdoors. · Do not start or run engine in
enclosed area, even if doors or windows are open.
[3] Firmly push primer bulb 3 times. Note: If starting a NEW ENGINE, press 5
times. If engine floods, set choke to OPEN/RUN position, place throttle in
FAST (if equipped) and crank until engine starts.
[4] Squeeze brake release bar toward handle on mower and any other equipment
with this feature. If you do not keep brake release bar held against mower
handle, engine will not start, or remain running.
[5] Grasp rope handle. Pull slowly until resistance is felt, then pull rapidly
to start engine and avoid kickback.
WARNING
Rapid retraction of starter cord (kickback) will pull hand and arm toward
engine faster than you can let go. To avoid kickback, slowly pull the cord
until you feel resistance, then pull rapidly.
Broken bones, fractures, bruises or sprains could result.
Rotating parts can contact or entangle hands, feet, hair, clothing, or
accessories.
Traumatic amputation or severe laceration can result.
7
Operating
WARNING
Engines give off carbon monoxide, an odorless, colorless, poison gas.
Breathing carbon monoxide can cause nausea, fainting or death.
After engine has started, let it warm up several seconds to several minutes,
depending on outside temperature. For maximum performance and life, operate
engine with throttle in FAST.
· Do not tip engine or equipment at angle which causes gasoline to spill.
· Do not choke carburetor to stop engine.
Periodically remove grass
buildup under mower deck.
(See Maintenance.)
WARNING
WARNING
· Operate equipment with guards in place.
· Keep hands and feet away from rotating parts.
· Tie up long hair and remove jewelry.
· Do not wear loose-fitting clothing, dangling drawstrings or items that could
become caught.
Stopping
CAUTION
Do not stop engine by moving choke control to CHOKE (if equipped). Backfire,
fire or engine damage could occur.
[1] Move throttle (if equipped) to SLOW, then
[2] Release safety brake control handle.
WARNING
Running engines produce heat. Engine parts, especially muffler, become
extremely hot.
Severe thermal burns can occur on contact.
Combustible debris, such as leaves, grass, brush, etc. can catch fire.
· Allow muffler, engine cylinder and fins to cool before touching.
· Remove accumulated combustibles from muffler area and cylinder area.
· Install and maintain in working order a spark arrester before using
equipment on forest-covered, grass-covered, brush-covered unimproved land. The
state of California requires this (Section 4442 of the California Public
Resources Code). Other states may have similar laws. Federal laws apply on
federal land.
8
Oil
Oil Capacity
The engine holds approximately 18 oz. or 0.5 liter.
· Use a high quality detergent oil classified “For Service SF, SG, SH, SJ” or
higher, such as Briggs & Stratton SAE 30.
· Do not use special additives.
· Choose a viscosity according to the table opposite.
Note: Synthetic oil meeting ILSAC GF-2, API certification mark and API service
symbol (shown at left) with “SJ/CF ENERGY CONSERVING” or higher, is an
acceptable oil at all temperatures. Use of synthetic oil does not alter
required oil change intervals.
Oil Recommendation
SAE Viscosity Grades
°F -20 °C -30
0 -20
20 -10
32 40 0
60 10
80
20
30
100 40
EXPECTED STARTING TEMPERATURE RANGE BEFORE NEXT OIL CHANGE
CAUTION
- Air cooled engines run hotter than automotive engines. The use of non-synthetic multi-viscosity oils (5W-30, 10W-30, etc.) in temperatures above 40° F (4° C) will result in higher than normal oil consumption. When using a multi-viscosity oil, check oil level more frequently.
** SAE 30 oil, if used below 40° F (4° C), will result in hard starting and possible engine bore damage due to inadequate lubrication.
Checking Oil Level
· Check oil level before starting the engine. · Check level daily, or after
every eight (8) hours. · Keep oil level at FULL.
[1] Place engine level and clean around oil fill area.
[2] Remove dipstick and wipe clean with cloth.
[3] Replace and tighten dipstick. Remove and check oil level. Oil level should
be at FULL line on dipstick.
[4] If needed, add oil slowly – recheck. Do not over fill.
[5] Wipe dipstick clean, replace and tighten. Remove and check oil level. Oil
level should be at FULL line on dipstick.
CAUTION
Do not overfill. Overfilling with oil may cause the engine to not start, or
hard starting. If over the FULL mark on dipstick, drain oil to reduce oil
level to FULL mark on dipstick.
9
Changing Oil
Change oil after first 5 to 8 hours of use, then every 50 hours or every
season. Change oil every 25 hours when operating the engine under heavy load
or in high temperatures.
[1] Run engine until it runs out of fuel. Otherwise, fuel can leak out,
creating a fire/explosion hazard, when you tip engine in Step 4.
[2] Disconnect spark plug wire and keep it away from spark plug.
[3] With engine OFF but still warm remove dipstick.
[4] Top oil drain, keep spark plug side up. Bottom or side oil drain (if
equipped), keep engine level. Drain oil into appropriate receptacle.
Note: Top oil drain is recommended method, however oil can drain from side (if
equipped) or bottom as shown. [5] Place engine level. Add about (18 ounces:
0.5 liter) new oil. Fill to FULL line on dipstick. Do not overfill. Replace
dipstick.
CAUTION
Used oil is a hazardous waste product. Dispose of used oil properly. Do not
discard with household waste. Check with your local authorities, service
center, or dealer for safe disposal/recycling facilities.
WARNING
On bottom oil drain, DO NOT rotate blade or any other parts unless spark plug
wire is disconnected from spark plug.
DRAIN PLUGS
PIPE
3/8″ SQUARE
CUTTING BLADE
OIL DRAIN PLUG
RATCHET AND
EXTENSION
SPARK PLUG
Bottom Oil Drain
Top Oil Drain
Side Oil Drain (if equipped)
High Oil Fill (if equipped)
Low Oil Fill (if equipped)
10
Fuel
Type of Fuel to Use
· Use clean, fresh, regular unleaded gasoline with a minimum of 85 octane.
Fresh fuel prevents gum from forming in the fuel system or on essential
carburetor parts. Purchase fuel in quantity that can be used within 30 days.
· Do not use gasoline which contains Methanol.
· Do not mix oil with gasoline.
· For engine protection use Briggs & Stratton Gasoline Additive available from
your Authorized Briggs & Stratton Dealer.
· This engine is certified to operate on gasoline. Exhaust Emission Control
System: EM (Engine Modifications).
Adding Fuel
[1] Remove cap. Fill tank to approximately 1-1/2 inches below top of neck to
allow for fuel expansion. Be careful not to overfill. Briggs & Stratton Smart-
fill) fuel can fills to the correct level and automatically shuts off,
reducing spills and emissions.
[2] Replace cap before starting.
Fuel Fill
CAUTION
Some fuels, called oxygenated or reformulated gasoline, are gasoline blended
with alcohols or ethers. Excessive amounts of these blends can damage the fuel
system or cause performance problems. If any undesirable operating symptoms
occur, use gasoline with a lower percentage of alcohol or ether.
WARNING
· Turn engine OFF and let engine cool at least 2 minutes before removing gas
cap.
· Fill fuel tank outdoors or in well-ventilated area.
· Do not overfill fuel tank. Fill tank to approximately 1-1/2 inches below top
of neck to allow for fuel expansion.
· If fuel spills, wait until it evaporates before starting engine.
· Keep gasoline away from sparks, open flames, pilot lights, heat, and other
ignition sources.
· Check fuel lines, tank, cap, and fittings frequently for cracks or leaks.
Replace if necessary.
Neck
11
Specifications
We recommend that you see an authorized Briggs & Stratton Service Dealer for
all maintenance and service of the engine and engine parts. Use only genuine
Briggs & Stratton parts. This is a single cylinder, L-head, air-cooled engine.
It is a low emissions engine. In the state of California, model 90000 / 100000
engines covered in this manual are certified by the California Air Resources
Board to meet emissions standards for 125 hours. Such certification does not
grant the purchaser, owner or operator of this engine any additional
warranties with respect to the performance or operational life of this engine.
This engine is warranted solely according to the product and emissions
warranties stated elsewhere in this manual. Model 90000 Bore . . . . . . . . .
. . . . . . . . . . . . . . . 2-9/16 in. (65.09 mm)
Stroke . . . . . . . . . . . . . . . . . . . . . . . 1-3/4 in. (44.45 mm)
Displacement . . . . . . . . . . . . . . . . 9.02 cu. in. (147.8 cc) Model
100000 Bore . . . . . . . . . . . . . . . . . . . . . . . . 2-9/16 in. (65.09
mm)
Stroke . . . . . . . . . . . . . . . . . . . . . . . 1-7/8 in. (47.63 mm)
Displacement . . . . . . . . . . . . . . . . 9.67 cu. in. (158.6 cc)
Tune-up Specifications Armature air gap . . 0.006 – 0.010 in. (0.15 – 0.25 mm)
Spark plug gap . . . . . . . . . . . . . . . . . 0.030 in. (0.76 mm)
Valve clearance with valve springs installed and piston 1/4 in. (6 mm) past
top dead center (check when engine is cold). See Repair Manual P/N 270962.
Intake . . . . . . . . . . . . 0.005 – 0.007 in. (0.13 – 0.18 mm) Exhaust . .
. . . . . . . . 0.007 – 0.009 in. (0.18 – 0.23 mm)
Note: For practical operation, the horsepower loading should not exceed 85% of
rated horsepower. Engine power will decrease 3-1/2% for each 1,000 feet (300
meters) above sea level and 1% for each 10° F (5.6° C) above 77° F (25° C). It
will operate satisfactorily at an angle up to 15°.
Model, Type and Code Number
To get replacement parts or technical assistance in the future write your
engine Model, Type and Code number along with the date of purchase here. These
numbers are located on your engine. For the location, see Engine Features.
Model
Type
Code
12
Technical Information
Engine Power Rating Information
The gross power rating for individual gas engine models is labeled in
accordance with SAE (Society of Automotive Engineers) code J1940 (Small Engine
Power & Torque Rating Procedure), and rating performance has been obtained and
corrected in accordance with SAE J1995 (Revision 2002-05). Actual gross engine
power will be lower and is affected by, among other things, ambient operating
conditions and engine-to-engine variability. Given both the wide array of
products on which engines are placed and the variety of environmental issues
applicable to operating the equipment, the gas engine will not develop the
rated gross power when used in a given piece of power equipment (actual “on-
site” or net horsepower). This difference is due to a variety of factors
including, but not limited to, accessories (air cleaner, exhaust, charging,
cooling, carburetor, fuel pump, etc.), application limitations, ambient
operating conditions (temperature, humidity, altitude), and engine-to-engine
variability. Due to manufacturing and capacity limitations, Briggs & Stratton
may substitute an engine of higher rated power for this Series engine.
Emission Information
Engines that are certified to meet the California Air Resources Board (CARB)
Tier 2 Emission Standards must display information regarding the Emissions
Durability Period and the Air Index. Briggs & Stratton makes this information
available to the consumer on our emission labels. The engine emission label
will indicate certification information.
The Emissions Durability Period describes the number of hours of actual
running time for which the engine is certified to be emissions compliant,
assuming proper maintenance in accordance with the Operating & Maintenance
Instructions. The following categories are used:
Moderate: Engine is certified to be emission compliant for 125 hours of actual
engine running time.
Intermediate: Engine is certified to be emission compliant for 250 hours of
actual engine running time.
Extended: Engine is certified to be emission compliant for 500 hours of actual
engine running time. For example, a typical walk-behind lawn mower is used 20
to 25 hours per year. Therefore, the Emissions Durability Period of an engine
with an intermediate rating would equate to 10 to 12 years.
Certain Briggs & Stratton engines will be certified to meet the United States
Environmental Protection Agency (USEPA) Phase 2 emission standards. For Phase
2 certified engines, the Emissions Compliance Period referred to on the
Emissions Compliance label indicates the number of operating hours for which
the engine has been shown to meet Federal emission requirements.
For engines less than 225 cc displacement. Category C = 125 hours Category B =
250 hours Category A = 500 hours
For engines of 225 cc or more displacement. Category C = 250 hours Category B
= 500 hours Category A = 1000 hours.
Maintenance
Regular maintenance will improve the performance and extend the life of the
engine. See any Authorized Briggs & Stratton Dealer for service. Use only
genuine Briggs & Stratton parts. Other parts may not perform as well, may
damage the engine, and may result in injury. In addition, use of other parts
may void your warranty.
Emission Control
Maintenance, replacement or repair of the emission control devices and systems
may be performed by any nonroad engine repair establishment or individual.
However, to obtain no charge repairs under the terms and provisions of the
Briggs & Stratton warranty statement, any service or emission control part
repair or replacement must be performed by a factory authorized dealer.
WARNING
Unintentional sparking can result in fire or electric shock.
Fire or explosion can cause severe burns or death.
Unintentional start-up can result in entanglement, traumatic amputation, or
laceration.
Before performing adjustments or repairs:
· Disconnect spark plug wire and keep it away from spark plug.
· Disconnect battery at negative terminal (only engines with electric start).
· Do not strike the flywheel with a hammer or hard object because the flywheel
may later shatter during operation.
· Do not tamper with governor spring, links or other parts to increase engine
speed.
When testing for spark:
· Use approved spark plug tester. · Do not check for spark with spark
plug removed.
Follow the instructions and schedules indicated below.
Task
Perform task at hourly or calendar interval, whichever comes first. Check Oil
Level
Change Oil *
Service Foam Air Cleaner Element
Replace Spark Plug
Inspect Spark Arrester (if equipped)
Clean Air Cooling System
Clean Combustion Chamber
- Change oil after first 5 to 8 hours of use, then every 50 hours or every season. Change oil every 25 hours when operating the engine under heavy load or in high temperatures.
** Clean more often under dusty conditions or when airborne debris is present. Replace air cleaner parts, if very dirty.
13
Air Cleaner
All engines have a foam air cleaner element. Replace element if very dirty or
damaged.
CAUTION
Air cleaner filter element must be oiled or engine damage will occur.
COVER
CUP
FILTER ELEMENT
Style 1
BASE
Style 2
TO REPLACE FILTER:
· Remove screw. · Carefully remove air cleaner to prevent debris from falling
into carburetor. · Take air cleaner apart and clean all parts. Wash Oil-Foam
element in liquid detergent and water. Squeeze dry in a
clean cloth. Saturate Oil-Foam element in engine oil and squeeze in a clean
cloth to remove excess oil.
· Install Oil-Foam element and cup, if equipped, in base. Note: On Style 2 air
cleaner, install element so lip extends over edge of body to form protective
seal when cover is assembled.
· Install air cleaner securely on carburetor with screw.
Air Cooling System
Grass or chaff may clog engine’s air cooling system, especially after
prolonged service cutting tall, dry grass. Internal cooling fins and surfaces
may require cleaning to prevent overheating and engine damage.
REMOVING AND RE-INSTALLING COVER/ BLOWER HOUSING
[1] Remove 2 screws from cover (if equipped) and lift cover straight until tab
clears.
[2] Remove 3 screws and blower housing.
Note: Do not loosen 2 band brake bracket screws. Do not bend or remove
flywheel guard.
[3] Clean areas shown.
[4] Reinstall blower housing and cover (if equipped).
REMOVE PLASTIC COVER MODEL 100000
COVER SCREWS
TAB
SCREWS
REMOVE BLOWER HOUSING
SCREW
Cover / Blower Housing
KEEP AREAS WITHIN HEAVY LINE CLEAR OF ALL DEBRIS
DO NOT BEND OR REMOVE
DO NOT LOOSEN BAND BRAKE SCREWS
Air Cooling System
14
Spark Plug
Use only Briggs & Stratton Spark Tester (part number 19368) to check for
spark.
.030″ (0.76 mm) WIRE GAUGE
Note: In some areas, local law requires using resistor spark plug to suppress ignition signals. If this engine was originally equipped with resistor spark plug, use same type for replacement.
Cleaning Debris
Daily or before every use, clean grass, chaff or accumulated debris from
engine. Keep linkage, spring and controls clean. Keep area around and behind
muffler free of any combustible debris.
FINGER GUARD
ROTATING SCREEN
Finger Guard
CLEAN
Linkage, Springs & Controls
CLEAN
CLEAN
Muffler Area & Spark Arrester
Combustion Deposits
We recommend that after every 100-300 hours you have an authorized Briggs & Stratton Service Dealer remove combustion deposits from the cylinder, cylinder head, top of piston, and around valves.
Muffler
WARNING
Replacement parts for the muffler must be the same and installed in the same position as the original parts, otherwise fire can occur.
Fuel System
WARNING
Replacement parts for fuel system (cap, hoses, tanks, filters, etc.) must be the same as original parts, otherwise fire can occur.
CAUTION
Do not use water to clean engine parts. Water could contaminate fuel system.
Use a brush or dry cloth.
WARNING
Engine parts should be kept clean to reduce the risk of overheating and ignition of accumulated debris. This is especially important if cutting tall grass.
Carburetor Adjustment
The carburetor on this engine is not adjustable.
WARNING
The manufacturer of the equipment on which this engine is installed specifies
top speed at which the engine will be operated. DO NOT EXCEED this speed.
15
Storage
Engines stored over 30 days need special attention.
[1] To prevent gum from forming in fuel system or on essential carburetor
parts: a) if fuel tank contains oxygenated or reformulated gasoline (gasoline
blended with an alcohol or an ether), run engine until it stops from lack of
fuel, or b) if fuel tank contains gasoline, either run engine until it stops
from lack of fuel, or add a gasoline additive to the gas in the tank. (See
parts list. Single-use pouches of gas additive are available from your service
dealer.) If you use a gas additive, run the engine for several minutes to
circulate the additive through the carburetor. Then, engine and fuel can be
stored up to 24 months.
[2] While engine is still warm, change oil.
[3] Remove spark plug and pour about 1/2 oz. (15 ml) of engine oil into
cylinder. Replace spark plug and crank slowly to distribute oil.
[4] Clean engine of surface debris, chaff or grass.
[5] Store in a clean, dry area. Do not store in same area as a stove, furnace,
water heater, or other appliance that uses a pilot light or has a device that
can create a spark.
WARNING
When Transporting Equipment:
· Transport with fuel tank EMPTY or with fuel shut-off valve OFF.
When storing gasoline or equipment with fuel in tank:
· Store away from furnaces, stoves, water heaters, or other appliances that
have a pilot light or other ignition source because they can ignite gasoline
vapors.
Service
See an Authorized Briggs & Stratton Service Dealer. Each one carries a stock
of Genuine Briggs & Stratton Parts and is equipped with special service tools.
Trained mechanics assure expert repair service on all Briggs & Stratton
engines. Only dealers advertising as “Authorized Briggs & Stratton” are
required to meet Briggs & Stratton standards.
When you purchase equipment powered by a Briggs & Stratton engine, you are
assured of highly skilled, reliable service at more than 30,000 Authorized
Service Dealers worldwide, including more than 6,000 Master Service
Technicians. Look for these signs wherever Briggs & Stratton service is
offered.
You may locate your nearest Authorized Briggs &
Stratton Service Dealer in our dealer locator map on
our web site www.briggsandstratton.com or in
the “Yellow PagesTM” directory under
or
“LTMawn”EMnogwineerss,”
Gasoline” or similar
or “Gasoline category.
Engines,”
Note: Walking fingers logo and “Yellow Pages” are registered trademarks in various jurisdictions.
PARTIAL LIST OF GENUINE BRIGGS & STRATTON PARTS
PART
PART NO.
Air cleaner element
698369
Air cleaner element used with cup
272235 (5047)
Oil
100005
Gas additive
5041
Resistor spark plug
802592
Standard spark plug
Long life platinum spark plug (used on most L-head engines)
492167 5062
Spark plug wrench
89838
Spark tester
19368
Oil pump kit
5056
(uses standard electric drill to remove oil from engine
quickly)
An illustrated shop manual includes common specifications and detailed information covering adjustment, tune-up and repair of Briggs & Stratton single cylinder, L-head, 4 cycle engines. It is available for purchase from an Authorized Briggs & Stratton Service Dealer or you can order it from the factory. Write:Briggs & Stratton Corporation; Attn: Service Division; P. O. Box 1144; Milwaukee, WI 53201
16
Warranty Information
Briggs & Stratton Corporation (B&S), the California Air Resources Board (CARB) and the United States Environmental Protection Agency (U.S. EPA) Emissions Control System Warranty Statement (Owner’s Defect Warranty Rights and Obligations)
The California Air Resources Board (CARB), U.S. EPA and B&S are pleased to
explain the Emissions Control System Warranty on your small off-road engine
(SORE). In California, new small off-road engines model year 2006 and later
must be designed, built and equipped to meet the State’s stringent anti-smog
standards.
Elsewhere in the United States, new non-road, spark-ignition engines certified
for model year 1997 and later must meet similar standards set forth by the
U.S. EPA. B&S must warrant the emissions control system on your engine for the
periods of time listed below, provided there has been no abuse, neglect or
improper maintenance of your small off-road engine.
Your emissions control system includes parts such as the carburetor, air
cleaner, ignition system, fuel line, muffler and catalytic converter. Also
included may be connectors and other emissions related assemblies.
Where a warrantable condition exists, B&S will repair your small off-road
engine at no cost to you including diagnosis, parts and labor.
Briggs & Stratton Emissions Control Defects Warranty Coverage
Small off-road engines are warranted relative to emissions control parts
defects for a period of two years, subject to provisions set forth below. If
any covered part on your engine is defective, the part will be repaired or
replaced by B&S.
Owner’s Warranty Responsibilities
As the small off-road engine owner, you are responsible for the performance of
the required maintenance listed in your Operating and Maintenance
Instructions. B&S recommends that you retain all your receipts covering
maintenance on your small off-road engine, but B&S cannot deny warranty solely
for the lack of receipts or for your failure to ensure the performance of all
scheduled maintenance.
As the small off-road engine owner, you should however be aware that B&S may
deny you warranty coverage if your small off-road engine or a part has failed
due to abuse, neglect, improper maintenance or unapproved modifications.
You are responsible for presenting your small off-road engine to an Authorized
B&S Service Dealer as soon as a problem exists.
The undisputed warranty repairs should be completed in a reasonable amount of
time, not to exceed 30 days.
If you have any questions regarding your warranty rights and responsibilities,
you should contact a B&S Service Representative at
1-414-259-5262.
The emissions warranty is a defects warranty. Defects are judged on normal
engine performance. The warranty is not related to an in-use emissions test.
Briggs & Stratton Emissions Control Defects Warranty Provisions
The following are specific provisions relative to your Emissions Control Defects Warranty Coverage. It is in addition to the B&S
engine warranty for non-regulated engines found in the Operating and Maintenance Instructions.
1. Warranted Parts
performed at no charge to the owner, including
Coverage under this warranty extends only to the parts
diagnostic labor which leads to the determination that a
listed below (the emissions control systems parts) to the
Warranted Part is defective, if the diagnostic work is
extent these parts were present on the engine
performed at an Authorized B&S Service Dealer. For
purchased.
emissions warranty service contact your nearest
a. Fuel Metering System
Authorized B&S Service Dealer as listed in the “Yellow
· Cold start enrichment system
Pages” under “Engines, Gasoline,” “Gasoline Engines,”
· Carburetor and internal parts
“Lawn Mowers,” or similar category.
· Fuel Pump
4. Claims and Coverage Exclusions
· Fuel line, fuel line fittings, clamps
Warranty claims shall be filed in accordance with the
· Fuel tank, cap and tether
provisions of the B&S Engine Warranty Policy. Warranty
· Carbon canister
coverage shall be excluded for failures of Warranted
b. Air Induction System
Parts which are not original B&S parts or because of
· Air cleaner
abuse, neglect or improper maintenance as set forth in
· Intake manifold
the B&S Engine Warranty Policy. B&S is not liable to
· Purge and vent line
cover failures of Warranted Parts caused by the use of
c. Ignition System
add-on, non-original, or modified parts.
· Spark plug(s)
5. Maintenance
· Magneto ignition system
Any Warranted Part which is not scheduled for
d. Catalyst System
replacement as required maintenance or which is
· Catalytic converter
scheduled only for regular inspection to the effect of
· Exhaust manifold
“repair or replace as necessary” shall be warranted as to
· Air injection system, Pulse valve
defects for the warranty period. Any Warranted Part which
e. Miscellaneous Items
is scheduled for replacement as required maintenance
· Vacuum, temperature, position, time sensitive
shall be warranted as to defects only for the period of time
valves and switches
up to the first scheduled replacement for that part. Any
· Connectors and assemblies
replacement part that is equivalent in performance and
2. Length of Coverage
durability may be used in the performance of any
B&S warrants to the initial owner and each subsequent
maintenance or repairs. The owner is responsible for the
purchaser that the Warranted Parts shall be free from
performance of all required maintenance, as defined in
defects in materials and workmanship which caused the
the B&S Operating and Maintenance Instructions.
failure of the Warranted Parts for a period of two years
6. Consequential Coverage
from the date the engine is delivered to a retail purchaser.
Coverage hereunder shall extend to the failure of any
3. No Charge
engine components caused by the failure of any
Repair or replacement of any Warranted Part will be
Warranted Part still under warranty.
17
ABOUT YOUR ENGINE WARRANTY
Briggs & Stratton welcomes warranty repair and apologizes to you for being
inconvenienced. Any Authorized Service Dealer may perform warranty repairs.
Most warranty repairs are handled routinely, but sometimes requests for
warranty service may not be appropriate. For example, warranty would not apply
if engine damage occurred because of misuse, lack of routine maintenance,
shipping, handling, warehousing or improper installation. Similarly, warranty
is void if the serial number of the engine has been removed or the engine has
been altered or modified.
If a customer differs with the decision of the Service Dealer, an
investigation will be made to determine whether the warranty applies. Ask the
Service Dealer to submit all supporting facts to his Distributor or the
Factory for review. If the Distributor or the Factory decides that the claim
is justified, the customer will be fully reimbursed for those items that are
defective. To avoid misunderstanding which might occur between the customer
and the Dealer, listed below are some of the causes of engine failure that the
warranty does not cover.
Normal wear:
Engines, like all mechanical devices, need periodic parts service and
replacement to perform well. Warranty will not cover repair when normal use
has exhausted the life of a part or an engine.
Improper maintenance:
The life of an engine depends upon the conditions under which it operates, and
the care it receives. Some applications, such as tillers, pumps and rotary
mowers, are very often used in dusty or dirty conditions, which can cause what
appears to be premature wear. Such wear, when caused by dirt, dust, spark plug
cleaning grit, or other abrasive material that has entered the engine because
of improper maintenance, is not covered by warranty.
This warranty covers engine related defective material and/or workmanship
only, and not replacement or refund of the equipment to which the engine may
be mounted. Nor does the warranty extend to repairs required because of:
1. PROBLEMS CAUSED BY PARTS THAT ARE NOT ORIGINAL BRIGGS & STRATTON PARTS.
2. Equipment controls or installations that prevent starting, cause
unsatisfactory engine performance, or shorten engine life. (Contact equipment
manufacturer.)
3. Leaking carburetors, clogged fuel pipes, sticking valves, or other damage,
caused by using contaminated or stale fuel. (Use clean, fresh, lead-free
gasoline and Briggs & Stratton Fuel Stabilizer, Part No. 5041.)
4. Parts which are scored or broken because an engine was operated with
insufficient or contaminated lubricating oil, or an incorrect grade of
lubricating oil (check oil level daily or after every 8 hours of operation.
Refill when necessary and change at recommended intervals.) OIL GARD® may not
shut down running engine. Engine damage may occur if oil level is not properly
maintained. Read Operating & Maintenance Instructions.
5. Repair or adjustment of associated parts or assemblies such as clutches,
transmissions, remote controls, etc., which are not manufactured by Briggs &
Stratton.
6. Damage or wear to parts caused by dirt, which entered the engine because
of improper air cleaner maintenance, re-assembly, or use of a non-original air
cleaner element or cartridge. (At recommended intervals, clean and re-oil the
Oil-Foam element or the foam pre-cleaner, and replace the cartridge.) Read
Operating & Maintenance Instructions.
7. Parts damaged by over-speeding, or overheating caused by grass, debris, or
dirt, which plugs or clogs the cooling fins, or flywheel area, or damage
caused by operating the engine in a confined area without sufficient
ventilation. (Clean fins on the cylinder, cylinder head and flywheel at
recommended intervals.) Read Operating & Maintenance Instructions.
8. Engine or equipment parts broken by excessive vibration caused by a loose
engine mounting, loose cutter blades, unbalanced blades or loose or unbalanced
impellers, improper attachment of equipment to engine crankshaft, over-
speeding or other abuse in operation.
9. A bent or broken crankshaft, caused by striking a solid object with the
cutter blade of a rotary lawn mower, or excessive v-belt tightness.
10. Routine tune-up or adjustment of the engine.
11. Engine or engine component failure, i.e., combustion chamber, valves,
valve seats, valve guides, or burned starter motor windings, caused by the use
of alternate fuels such as, liquified petroleum, natural gas, altered
gasolines, etc.
Warranty is available only through service dealers which have been authorized
by Briggs & Stratton Corporation. your nearest Authorized Service Dealer is
listed in the “Yellow PagesTM” of your telephone directory under “Engines,
Gasoline” or “Gasoline Engines,” “Lawn Mowers,” or similar category.
18
BRIGGS & STRATTON ENGINE OWNER WARRANTY POLICY
Effective September 1, 2006
LIMITED WARRANTY Briggs & Stratton Corporation will repair or replace, free of
charge, any part(s) of the engine that is defective in material or workmanship
or both. Transportation charges on parts submitted for repair or replacement
under this warranty must be borne by purchaser. This warranty is effective for
and is subject to the time periods and conditions stated below. For warranty
service, find the nearest Authorized Service Dealer in our dealer locator map
at www.briggsandstratton.com, or by calling
1-800-233-3723, or as listed in the
`Yellow PagesTM’.
THERE IS NO OTHER EXPRESS WARRANTY. IMPLIED WARRANTIES, INCLUDING THOSE OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED TO ONE YEAR
FROM PURCHASE, OR TO THE EXTENT PERMITTED BY LAW ANY AND ALL IMPLIED
WARRANTIES ARE EXCLUDED. LIABILITY FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES ARE
EXCLUDED TO THE EXTENT EXCLUSION IS PERMITTED BY LAW. Some states or countries
do not allow limitations on how long an implied warranty lasts, and some
states or countries do not allow the exclusion or limitation of incidental or
consequential damages, so the above limitation and exclusion may not apply to
you. This warranty gives you specific legal rights and you may also have other
rights which vary from state to state and country to country.
WARRANTY TERMS **
Brand / Product Type Vanguardt Extended Life Seriest I/CR, Intek I/CR, Intek Prot Kerosene Fuel Operated Engines All Other Briggs & Stratton Engines
Consumer Use 2 years 2 years 2 years 1 year 2 years
Commercial Use 2 years 1 year 180 days 90 days 90 days
** Engines used on Home Standby Generator applications are warranted under consumer use only. This warranty does not apply to engines on equipment used for prime power in place of a utility. Engines used in competitive racing or on commercial or rental tracks are not warranted.
The warranty period begins on the date of purchase by the first retail
consumer or commercial end user, and continues for the period of time stated
in the table above. “Consumer use” means personal residential household use by
a retail consumer. “Commercial use” means all other uses, including use for
commercial, income producing or rental purposes. Once an engine has
experienced commercial use, it shall thereafter be considered as a commercial
use engine for purposes of this warranty.
NO WARRANTY REGISTRATION IS NECESSARY TO OBTAIN WARRANTY ON BRIGGS & STRATTON
PRODUCTS. SAVE YOUR PROOF OF PURCHASE RECEIPT. IF YOU DO NOT PROVIDE PROOF OF
THE INITIAL PURCHASE DATE AT THE TIME WARRANTY SERVICE IS REQUESTED, THE
MANUFACTURING DATE OF THE PRODUCT WILL BE USED TO DETERMINE THE WARRANTY
PERIOD.
Briggs & Stratton Engines Are Made Under One Or More Of The Following Patents: Design D-247,177 (Other Patents Pending)
6,691,683 6,647,942 6,622,683 6,615,787 6,617,725 6,603,227 6,595,897 6,595,176 6,584,964 6,557,833 6,542,074
6,520,141 6,495,267 6,494,175 6,472,790 6,460,502 6,456,515 6,382,166 6,369,532 6,356,003 6,349,688 6,347,614
6,325,036 6,311,663 6,284,123 6,263,852 6,260,529 6,242,828 6,239,709 6,237,555 6,230,678 6,213,083 6,202,616
6,145,487 6,142,257 6,135,426 6,116,212 6,105,548 6,347,614 6,082,323 6,077,063 6,064,027 6,040,767 6,014,808
6,012,420 5,992,367 5,904,124 5,894,715 5,887,678 5,852,951 5,843,345 5,823,153 5,819,513 5,813,384 5,809,958
5,803,035 5,765,713 5,732,555 5,645,025 5,642,701 5,628352 5,619,845 5,606,948 5,606,851 5,605,130 5,497,679
5,548,955 5,546,901 5,445,014 5,503,125 5,501,203 5,497,679 5,320,795 5,301,643 5,271,363 5,269,713 5,265,700
5,243,878 5,235,943 5,234,038 5,228,487 5,197,426 5,197,425 5,197,422 5,191,864 5,188,069 5,186,142 5,150,674
5,138,996 5,086,890 5,070,829 5,058,544 5,040,644 5,009,208 4,996,956 4,977,879 4,977,877 4,971,219 4,895,119
4,875,448 4,819,593 4,720,638 4,719,682 4,633,556 4,630,498 4,522,080 4,520,288 4,512,499 4,453,507 4,430,984
D 476,629 D 457,891 D 368,187 D 375,963 D 309,457 D 372,871 D 361,771 D 356,951 D 309,457 D 308,872 D 308,871
19
References
- Lawn Mower Engines | Outdoor Power Equipment | Backup Power Solutions | Briggs & Stratton
- Lawn Mower Engines | Outdoor Power Equipment | Backup Power Solutions | Briggs & Stratton
- Manual-Hub.com – Free PDF manuals!
Read User Manual Online (PDF format)
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