DuroMax Horizontal Shaft Engine
- June 7, 2024
- DuroMax
Table of Contents
Horizontal Shaft Engine
XP23HPE HORIZONTAL SHAFT ENGINE
User Manual
REV: XP23HPE_rev12272019
This manual provides information regarding the operation and maintenance of
these products. We have made every effort to ensure the accuracy of the
information in this manual. We reserve the right to change this product at any
time without prior notice.
5800 Ontario Mills Pkwy Ontario, CA 91764 USA
www.duromaxpower.com
Call our Customer Care Team Toll Free 8-5pm PST Mon-Fri
844-DUROMAX
CONTENTS
Introduction
Introduction …………………………………………………………………………………………………….. 4
General Safety Procedures ………………………………………………………………………………. 6
Package Contents …………………………………………………………………………………………….. 7
Engine Setup
Adding Oil ………………………………………………………………………………………………………. 10
Maintenance and Care
Maintenance Schedule…………………………………………………………………………………….. 14
Maintenance Log …………………………………………………………………………………………….. 15
Checking the Oil ……………………………………………………………………………………………… 16
Changing the Oil………………………………………………………………………………………………. 17
Cleaning the Air Filter ………………………………………………………………………………………. 18
Spark Plug Maintenance ………………………………………………………………………………….. 20
Storage and Transportation …………………………………………………………………………….. 22
Specifications…………………………………………………………………………………………………… 23
Warranty ………………………………………………………………………………………………………….. 26
Contact Information …………………………………………………………………………………….. 30
3
INTRODUCTION
DuroMax has cemented its reputation as one of the markets leading power
equipment companies who are headquartered in the US. All of our products are
manufactured to the strictest guidelines and go through countless testing in
all phases of production. Evolving our strong engine line, DuroMax has
complemented its offerings to include Pressure Washers, Water Pumps, Engines
and now offering V-Twin engines. Reliability is the highest standard we hold
ourselves to, whether its powering a heater during a winter storm that knocks
out power, dewatering a flooded property, or washing away a deck for the
summer season
STOP
Please do not return to store.
Duromax represntatives are ready to help you with any questions, concerns, or
issues about your new product. We can guide you through assembly, start up,
and how to operate your new generator. We want you to be able to put your new
generator to use right away!
CALL US BEFORE YOU CONSIDER RETURNING THE PRODUCT!
TOLL FREE 1-800-629-3325
Notice Regarding Emissions
Engines that are certified to comply with U.S. EPA emission regulations for
SORE (Small off Road Equipment), are certified to operate on regular unleaded
gasoline, and may include the following emission control systems: (EM) Engine
Modifications and (TWC) Three-Way Catalyst (if so equipped). 4
GENERAL SAFETY PROCEDURES
SAFETY ALERT SYMBOL
The safety alert symbol is used with one of the safety words (DANGER, CAUTION,
or WARNING) to alert you of hazards. Please pay attention to these hazard
notices both in this manual and on the Engine.
Please familiarize yourself with the following safety symbols and words:
DANGER: Indicates a hazard that will result in serious injury or death if
instructions are not followed.
WARNING: Indicates a strong possibility of causing serious injury or death if
instructions are not followed.
CAUTION: Indicates a possibility of personal injury or equipment damage if
instructions are not followed.
DANGER: This Engine produces poisonous carbon monoxide gas when running. This
gas is both odorless and colorless. Even if you do not see or smell gas,
carbon monoxide may still be present. Breathing this poison can lead to
headaches, dizziness, drowsiness, and eventually death.
Use outdoors ONLY in non-confined areas. Keep several feet of clearance on all
sides to allow proper ventilation of the Engine.
WARNING: The exhaust from this product contains chemicals known to the State
of California to cause cancer, birth defects, or other reproductive harm.
WARNING: This Engine produces heat when running. Temperatures near exhaust can
exceed 150°F (65°C).
Do not touch hot surfaces. Pay attention to warning labels on the Engine
denoting hot parts of the machine. Allow Engine to cool several minutes after
use before touching engine or areas which heat during use.
5
GENERAL SAFETY PROCEDURES
WARNING: This Engine may emit highly flammable and explosive gasoline vapors,
which can cause severe burns or even death. A nearby open flame can lead to an
explosion even if not directly in contact with gas. Do not operate near an
open flame. Do not smoke near Engine. Always operate on a firm, level surface.
Always turn Engine off before refueling. Allow Engine to cool for at least 2
minutes before removing fuel cap. Loosen cap
slowly to relieve pressure in tank. Do not overfill gas tank. Gas may expand
during operation. Do not fill to the top of
the tank. Always check for spilled gas before operating. Empty the gasoline
tank before storing or transporting the Engine. Before transporting, turn fuel
valve to the off position and disconnect the spark plug.
6
PACKAGE CONTENTS
Your Engine comes with the items listed below. Please check to see that all of
the following items are included with your Engine.
Spark Plug Wrench
Used in spark plug maintenance, inspection, and
installation.
Oil Funnel
Used to add oil to the Engine without messy spills.
Engine Keys
Used to start the Engine.
Note: Actual tools may differ in appearance or design from image shown. 7
8
ENGINE SETUP
Proper setup of your Engine will get you going as soon as possible while
making sure you and your equipment are safe and cared for.
ENGINE SETUP
Adding Oil
The Engine requires engine oil to operate properly. The Engine, when new from the package contains no oil in the crankcase*. You must add the proper amount of oil before operating the Engine for the first time. This amount is equal to the oil capacity of the engine crankcase:
Model Number Engine Oil Capacity
XP23HPE 54 fl. oz (1.6L)
WARNING: Do not apply engine oils with additives or 2-stroke gasoline engine oils. They don’t have enough lubrication, and may shorten the engine’s service life.
SAE 30
10W-30
5W-30 -20 0 20 40 60 80 100 F -40 -30 -20 -10 0 10 20 30 40 C
ENVIRONMENTAL TEMPERATURE
Engine oil recommended: SAE 10W-30. Viscosity varies with regions and temperatures. Choose your oil viscosity using the chart to the left.
- A small amount of oil from factory testing may be present on arrival.
1. Add oil
a. Make sure the Engine is on a level surface.
b. Unscrew the oil filler cap from the engine . c. Using a funnel, add the
appropriate amount of oil
into the crankcase. You can check the oil level of the Engine with the
dipstick located below the oil filler cap. Simply pull the dipstick out and
the indicated oil level is on the end of the stick.
d. Replace oil filler cap.
WARNING: DO NOT overfill the crankcase. This may damage the motor and shorting overall life of your Engine.
10
MAINTENANCE AND CARE
Proper maintenance and storage of your Engine is essential to ensure trouble
free use of your Engine when you need it. By following the maintenance and
care requirements, you can keep your Engine running smooth and efficient for
years to come.
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MAINTENANCE AND CARE
Proper routine maintenance of your Engine is essential for safe, economical,
and trouble-free operation. It will also help reduce air pollution.
WARNING: Improper maintenance, or failure to correct a problem before
operation, can cause a malfunction in which you can be seriously injured or
killed. Always follow the inspection and maintenance recommendations and
schedules in this instruction manual.
Make sure the engine is off before you begin any maintenance or repairs. Let
the engine and exhaust system cool before touching. 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.
Maintenance Schedule
Remember that this schedule is based on the assumption that your machine will be used for its designed purpose. Sustained high-load, high temperature operation, or use in unusually wet or dusty conditions, will require more frequent service.
SERVICE
BEFORE EACH USE
REGULAR SERVICE PERIOD
EVERY MO. OR EVERY 3 MO. OR EVERY 6 MO. OR
20 HRS
50 HRS
100 HRS
EVERY 12 MO. OR 300 HRS
ENGINE OIL
CHECK
CHANGE
AIR CLEANER
CHECK
CHANGE
SPARK PLUG
CLEAN-
ADJUST
REPLACE
SPARK ARRESTOR CLEAN
IDLE SPEED
CHECK /
ADJUST
VALVE CLEARANCE CHECK-
ADJUST
COMBUSTION CHAMBER
CLEAN
500 HOURS
FUEL TANK / FILTER CLEAN
FUEL TUBE
CHECK
EVERY 24 MO. (REPLACE IF NECESSARY)
TO BE PERFORMED AT EVERY MONTH INDICATED OR HOUR INTERVAL WHICH EVER COMES FIRST
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MAINTENANCE LOG
Date
Engine Hours
Maintenance Performed
15
MAINTENANCE AND CARE (CONTINUED)
Checking the oil
1. Check the oil
The Engine is equipped with an automatic shutoff to protect it from damage due
to low oil. Nonetheless, you should check the oil level of the engine before
each use to ensure that the engine crankcase has a sufficient amount. To check
the oil level:
a. Make sure the Engine is on a level surface. b. Remove dipstick. c. With a
dry cloth, wipe the oil off of the stick. d. Insert the dipstick completely
back into its hole in
the engine case. the pull it out again. There should now be oil on the stick.
If there is no oil on the stick, or oil only at the very end of the stick, you
should add oil until the engine crankcase is filled (see “Adding Oil” portion
of the “Maintenance” section). e. Be sure to replace the dipstick when
finished checking oil. NOTE: The oil capacity for your Engine can be found in
the “Specifications” section of this manual.
16
Changing the oil
Worn out or dirty oil does not cool the Engine properly and can lead to
catastrophic engine damage. In addition to regular oil changes, it is
necessary to drain the oil from the crankcase if it has become contaminated
with water or dirt.
1. Remove drain plug
Using a 10 mm hex wrench, unscrew the oil drain plug, which is located on the
crankcase underneath the oil filler/dipstick cap. Allow all the oil to drain
from the Engine.
2. Drain oil
Drain oil into an approved oil disposal container. Contact your local auto
parts store for information on oil disposal.
3. Replace drain plug
Replace the oil drain plug and tighten with a 10 mm hex wrench.
17
MAINTENANCE AND CARE (CONTINUED)
Cleaning the air filter
Routine maintenance of the air cleaner helps maintain proper airflow to the
carburetor. Check that the air cleaner is free of excessive dirt after every
use. Note: Improper maintenance may cause less air to enter the engine or
dirty air to enter the engine causing overheating and engine wear.
1. Unclip filter cover
Unhinge the fpur clasps of the air filter cover. There are two clips on each
side of the cover.
2. Remove filter cover
Remove the plastic air filter cover by sliding it out underneath the Engine’s
frame.
3. Remove filter
Remove the filter from on top of the engine. This filter is paper and is not
reusable. Please call 1-844-DUROMAX to order a replacement filter for your
Engine.
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4. Replace new filter
Insert the filter, paper side down into the air filter compartment on top of
the engine.
5. Replace filter cover
Slide the filter cover back in place between the frame and the engine.
6. Secure filter cover
Fasten the filter cover to the engine with the clips found on each side of the
cover.
19
MAINTENANCE AND CARE (CONTINUED)
Spark Plug Maintenance
The spark plug is important for proper engine operation. A good spark plug
should be intact, free of deposits, and properly gapped. The V-Twin engine in
this Engine has two spark plugs, one on each side. Both plugs are located just
underneath the OHV covers. Improper maintenance may cause reduced fuel
economy, misfires, trouble starting, or damage to the spark plug threads.
1. Remove spark plug cap
Pull on the spark plug cap to remove it.
2. Remove spark plug
Unscrew the spark plug from the Engine using the spark plug wrench included
with this product.
3. Inspect spark plug
Visually inspect the spark plug. If it is cracked or chipped, discard and
replace with a new spark plug. We recommend using a F6RTC spark plug such as
NGK BPR5ES.
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4. Measure plug gap
Measure the plug gap with a gauge. The gap should be 0.7-0.8 mm (0.028-0.031
in).
5. Clean and re-gap
If you are re-using the spark plug, use a wire brush to clean any dirt from
around the spark plug base and then re-gap the spark plug.
6. Replace spark plug
Screw the spark plug back into its place on the Engine using the spark plug
wrench.
7. Replace spark plug cap
Replace the spark plug cap.
21
MAINTENANCE AND CARE (CONTINUED)
Storage and Transportation
CAUTION: Never place any type of storage cover on the Engine while it is still
hot.
When transporting your Engine: Empty the gas tank Disconnect the spark plug. Do not obstruct any ventilation openings & keep the Engine in a cool dry area.
Storage Period
Storage Preparation
If you plan on starting the same day.
1. Turn off the key. 2. Store.
If you plan on starting the unit again within 30 days.
1. Turn off the fuel valve. 2. Allow the unit to stall out. 3. Turn off the key. 4. Add fuel stabilizer to the gas remaining in the tank. 5. Store.
If you do not plan to start the unit for longer than 30 days.
1. Turn off the fuel valve. 2. Allow the unit to stall out. 3. Turn off the
key. 4. Oil the cylinder
a. Remove the spark plug. b. Put 2 tbsp. of 10w30 motor oil directly into the
spark plug hole c. Pull the recoil start one time. d. Replace the plug. 5.
Remove the battery and place on tender indoors.
22
SPECIFICATIONS
23
24
WARRANTY
This section of the manual is to help you understand your warranty.
25
WARRANTY
3-year Warranty All DuroMax/DuroStar Power Equipment warrant the original
purchasers to a 3-year Parts Warranty (Residential Use ONLY: Unusually heavy
or commercial use is covered for a period of 1-year) in the event of failure
due to defects in electrical or mechanical components. Freight on any items
submitted for replacement or repair under the Warranty are the responsibility
of the equipment owner. This warranty is non-transferable and only valid to
the original purchaser.
Warranty Exclusions The DuroMax/DuroStar Power Equipment warranty does not
cover repairs or returns when the fault is: Normal Wear and Tear, Installation
Use or Maintenance Services, Cosmetic defects, Accessories, Failures due to
acts of God or Natural Disasters, or problems related to/from aftermarket or
non-OEM parts.
Warranty Limitations DuroMax/DuroStar Power Equipment does not claim or hold
any obligation to loss of time, freight charges, use of product, or any
incidental damages from the use of this product. THIS WARRANTY IS IN LIEU OF
ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED.
U.S EPA AND CALIFORNIA EMISSION CONTROL WARRANTY STATEMENT
YOUR WARRANTY RIGHTS AND OBLIGATIONS
The California Air Resources Board, The United States Environmental Protection
Agency (US EPA) and DuroMax Power Equipment, are pleased to explain the
emission control system warranty on your 2020-2021 year small off-road engine.
In the United States and California, new small off-road engines must be
designed built and equipped to meet the State’s stringent anti-smog standards.
DuroMax Power Equipment must warrant the emission control system on your small
off-road 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 emission control system may include parts such as the carburetor or fuel
injection system, the ignition system, and a catalytic converter. Also
included may be hoses, belts, connectors, and other emission-related
assemblies.
Where a warrantable condition exists, DuroMax Power Equipment will repair your
small off-road engine at no cost to you including diagnosis, parts, and labor.
MANUFACTURER’S WARRANTY COVERAGE
As the small off-road engine owner, you are responsible for the performance of
the required maintenance listed in your owner’s manual. DuroMax Power
Equipment recommends that you retain all receipts covering maintenance on your
small off-road engine, but DuroMax Power
26
Equipment 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 DuroMax
Power Equipment 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 a DuroMax
Power Equipment distribution center as soon as a problem exists. The 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,
contact DuroMax Power Equipment authorized warranty service facility:
TEL: 1-844-387-6629 WEBSITE:
www.duromaxpower.com ADDRESS: 5800 Ontario Mills Pkwy, Ontario CA 91764
This telephone number is only for the engines which the company name “DuroMax
Power Equipment” on the emission label.
Defects warranty requirements:
(a) The warranty period begins on the date the engine or equipment is
delivered to an ultimate purchaser. (b) General Emissions Warranty Coverage.
DuroMax Power Equipment warrants to the ultimate purchaser and each subsequent
owner that the engine or equipment is: (1) Designed, built, and equipped so as
to conform with all applicable regulations adopted by US EPA & Air Resources
Board; and (2) Free from defects in materials and workmanship that causes the
failure of a warranted part for a period of two years. (c) The warranty on
emissions-related parts will be interpreted as below: (1) Any warranted part
that is not scheduled for replacement as required maintenance in the written
instructions required by subsection (d) must be warranted for the warranty
period defined in Subsection(b)(2). If any such part fails during the period
of warranty coverage, it must be repaired or replaced by DuroMax Power
Equipment according to Subsection (4) below. Any such part repaired or
replaced under the warranty must be warranted for the remaining warranty
period. (2) Any warranted part that is scheduled only for regular inspection
in the written instructions required by subsection(d)must be warranted for the
warranty period defined in Subsection(b)(2). A statement in such written
instructions to the effect of
27
WARRANTY (CONTINUED)
“repair or replace as necessary” will not reduce the period of warranty
coverage. Any such part repaired or replaced under warranty must be warranted
for the remaining warranty period. (3) Any warranted part that is scheduled
for replacement as required maintenance in the written instructions required
by subsection (d) must be warranted for the period of time prior to the first
scheduled replacement point for that part. If the part fails prior to the
first scheduled replacement, the part must be repaired or replaced by DuroMax
Power Equipment according to Subsection (4) below. Any such part repaired or
replaced under warranty must be warranted for the remainder of the period
prior to the first scheduled replacement point for the part. (4) Repair or
replacement of any warranted part under the warranty must be performed at no
charge to the owner at a warranty station. (5) Notwithstanding the provisions
of Subsection (4) above, warranty services or repairs must be provided at all
DuroMax Power Equipment distribution centers that are franchised to service
the subject engines. (6) The owner must not be charged for diagnostic labor
that leads to the determination that a warranted part is, in fact, defective
provided that such diagnostic work is performed at a warranty station. (7)
DuroMax Power Equipment is liable for damages to other engine components
proximately caused by a failure under warranty of any warranted part. (8)
Throughout the emissions warranty period defined in Subsection (b)(2), DuroMax
Power Equipment must maintain a supply of warranted parts sufficient to meet
the expected demand for such parts. (9) Any replacement part may be used in
the performance of any warranty maintenance or repairs and must be provided
without charge to the owner such use will not reduce the warranty obligations
of DuroMax Power Equipment (10) Add-on or modified parts that are not exempted
by the Air Resources Board may not be used. The use of any non-exempted add-on
or modified parts will be grounds for disallowing a warranty claim. DuroMax
Power Equipment will not be liable to warrant failures of warranted parts
caused by the use of a non-exempted add-on or modified part. (11) DuroMax
Power Equipment issuing the warranty shall provide any documents that describe
that manufacturer’s warranty procedures or policies within five working days
of a request by the US EPA & Air Resources Board.
Emission Warranty Parts List.
(1) Fuel Metering System (i) Carburetor and internal parts (and/or pressure
regulator or fuel injection system). (ii) Air/fuel ratio feedback and control
system. (iii) Cold start enrichment system. (iv) Fuel tank. (2) Air induction
system (i) Controlled hot air intake system. (ii) Intake manifolds.
28
(iii) Air filter. (3) Ignition System (i) Spark Plugs. (ii) Magneto or
electronic ignition system. (iii) Spark advance/retard system. (4) Exhaust Gas
Recirculation (EGR) System (i) EGR valve body, and carburetor spacer if
applicable. (ii) EGR rate feedback and control system. (5) Air Injection
System (i) Air pump or pulse valve. (ii) Valves affecting the distribution of
flow. (iii) Distribution manifold. (6) Catalyst or Thermal Reactor System (i)
Catalytic converter. (ii) Thermal reactor. (iii) Exhaust manifold. (7)
Particulate Controls (i) Traps, filters, precipitators, and any other device
used to capture particulate emissions. (8) Miscellaneous Items Used in Above
Systems (i) Electronic controls (ii) Vacuum, temperature, and time-sensitive
valves and switches. (iii) Hoses, belts, connectors, and assemblies.
DuroMax Power Equipment will furnish with each new engine written instructions
for the maintenance and use of the engine by the owner.
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CUSTOMER SERVICE
Duromax Power Equipment is comitted to ensuring that our products perform when
they need to. Our Engines are your lifeline in the event of an emergency.
Should you have any problems, please contact our customer service department:
DUROMAX POWER EQUIPMENT 5800 Ontario Mills Parkway Ontario, CA 91764
Customer Service: 844-DUROMAX Customer Service Hours: 8-5pm PST Website:
www.duromaxpower.com Email: [email protected]
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5800 Ontario Mills Parkway Ontario, CA 91764 United States
844-DUROMAX