HONDA GXH50 User Manual [en, es, fr]
INTRODUCTION
Thank you for purchasing a Honda engine. We want to help you to
get the best results from your new engine and to operate it safely.
This manual contains information on how to do that; please read it
carefully before operating the engine. If a problem should arise, or
if you have any questions about your engine, consult an
authorized Honda servicing dealer.
All information in this publication is based on the latest product
information available at the time of printing. Honda Motor Co., Ltd.
reserves the right to make changes at any time without notice and
without incurring any obligation. No part of this publication may
be reproduced without written permission.
This manual should be considered a permanent part of the engine
and should remain with the engine if resold.
Review the instructions provided with the equipment powered by
this engine for any additional information regarding engine
startup, shutdown, operation, adjustments or any special
maintenance instructions.
United States, Puerto Rico, and U.S. Virgin Islands:
We suggest you read the warranty policy to fully understand its
coverage and your responsibilities of ownership. The warranty
policy is a separate document that should have been given to you
by your dealer.
SAFETY MESSAGES
OWNER’S MANUAL
MANUEL DE L’UTILISATEUR
MANUAL DEL PROPIETARIO
GXH50
The engine exhaust from this product
contains chemicals known to the State of
California to cause cancer, birth defects
or other reproductive harm.
ENGLISHFRANÇAISESPAÑOL
Your safety and the safety of others are very important. We have
provided important safety messages in this manual and on the
engine. Please read these messages carefully.
A safety message alerts you to potential hazards that could hurt
you or others. Each safety message is preceded by a safety alert
symbol and one of three 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.
Each message tells you what the hazard is, what can happen, and
what you can do to avoid or reduce injury.
DAMAGE PREVENTION MESSAGES
You will also see other important messages that are preceded by
the word NOTICE.
This word means:
Your engine or other property can be damaged if you
don’t follow instructions.
The purpose of these messages is to help prevent damage to your
engine, other property, or the environment.
CONTENTS
.......................INTRODUCTION .1
................SAFETY MESSAGES .1
..........SAFETY INFORMATION .2
COMPONENT & CONTROL
................................LOCATION .2
................................FEATURES .2
BEFORE OPERATION
....................................CHECKS .3
..............................OPERATION .3
SAFE OPERATING
.....................PRECAUTIONS .3
THE IMPORTANCE OF
....................MAINTENANCE .6
MAINTENANCE
............................SCHEDULE .6
...........................REFUELING .7
...........................ENGINE OIL .7
............Recommended Oil .7
..................Oil Level Check .8
.........................Oil Change .8
........................AIR CLEANER .9
..........................Inspection .9
............................Cleaning .9
......STARTING THE ENGINE .3
.....SETTING ENGINE SPEED .4
......STOPPING THE ENGINE .5
.....SERVICING YOUR ENGINE .6
......MAINTENANCE SAFETY .6
.......SAFETY PRECAUTIONS .6
........................SPARK PLUG .9
.............SPARK ARRESTER .10
HELPFUL TIPS &
......................SUGGESTIONS .10
...STORING YOUR ENGINE .10
................TRANSPORTING .12
TAKING CARE OF
....UNEXPECTED PROBLEMS .12
..TECHNICAL INFORMATION .13
.....Serial Number Location .13
Carburetor Modifications for
.....High Altitude Operation .13
Emission Control System
.........................Information .14
..............................Air Index .14
.....................Specifications .15
........Tuneup Specifications .15
Quick Reference
.........................Information .15
................Wiring Diagrams .15
.CONSUMER INFORMATION .16
Distributor/Dealer Locator
.........................Information .16
Customer Service
.........................Information .16
2007 Honda Motor Co., Ltd. All Rights Reserved
37Z4C603
00X37-Z4C-6030
−
GXH50U
ENGLISH
1
COMPONENT & CONTROL LOCATIONSAFETY INFORMATION
Understand the operation of all controls and learn how to stop
the engine quickly in case of emergency. Make sure the operator
receives adequate instruction before operating the equipment.
Do not allow children to operate the engine. Keep children and
pets away from the area of operation.
Your engine’s exhaust contains poisonous carbon monoxide.
Do not run the engine without adequate ventilation, and never
run the engine indoors.
The engine and exhaust become very hot during operation.
Keep the engine at least 1 meter (3 feet) away from buildings
and other equipment during operation. Keep flammable
materials away, and do not place anything on the engine while it
is running.
CHOKE LEVER
AIR CLEANER
OIL FILLER CAP/
DIPSTICK
OIL DRAIN PLUG
FUEL FILLER CAP
STARTER GRIP
SPARK PLUG
THROTTLE LEVER
RECOIL STARTER
FUEL TANK
MUFFLER
FUEL VALVE LEVER
ENGINE SWITCH
FEATURES
Oil Alert System (applicable types)
‘‘Oil Alert is a registered trademark in the United States’’
System 1 (applicable types)
The Oil Alert system is designed to prevent engine damage
caused by an insufficient amount of oil in the crankcase. Before
the oil level in the crankcase can fall below a safe limit, the Oil
Alert system will automatically stop the engine (the engine switch
will remain in the ON position).
If the engine stops and will not restart, check the engine oil level
(see page ) before troubleshooting in other areas.
System 2 (applicable types)
The Oil Alert system is designed to prevent engine damage
caused by an insufficient amount of oil in the crankcase. Before
the oil level in the crankcase can fall below a safe limit, the Oil
Alert system will prevent the engine from starting.
8
If the engine will not start, check the engine oil level (see page )
8
before troubleshooting in other areas.
2
ENGLISH
BEFORE OPERATION CHECKS OPERATION
IS YOUR ENGINE READY TO GO? SAFE OPERATING PRECAUTIONS
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 engine to check its condition. Be sure to take care of
any problem you find, or have your servicing dealer correct it,
before you operate the engine.
Improperly maintaining this engine, or failure to
correct a problem before operation, can cause a
malfunction in which you can be seriously hurt or
killed.
Always perform a pre-operation inspection before
each operation, and correct any problem.
Before beginning your pre-operation checks, be sure the engine is
level and the engine switch is in the OFF position.
Always check the following items before you start the engine:
Check the General Condition of the Engine
1.
Look around and underneath the engine for signs of oil or
gasoline leaks.
Remove any excessive dirt or debris, especially around the
2.
muffler and recoil starter.
Before operating the engine for the first time, please review the
SAFETY INFORMATION
OPERATION CHECKS
section on page and the
2
on this page.
BEFORE
Carbon monoxide gas is toxic. Breathing it can cause
unconsciousness and even kill you.
Avoid any areas or actions that expose you to carbon
monoxide.
Review the instructions provided with the equipment powered by
this engine for any safety precautions that should be observed
with engine startup, shutdown or operation.
STARTING THE ENGINE
1.
Move the fuel valve lever to the ON position.
FUEL VALVE LEVER
OONN
Look for signs of damage.
3.
Check that all shields and covers are in place, and all nuts, bolts,
4.
and screws are tightened.
Check the Engine
Check the fuel level (see page ). Starting with a full tank will
1.
7
help to eliminate or reduce operating interruptions for refueling.
Check the engine oil level (see page ). Running the engine
2.
8
with a low oil level can cause engine damage.
The Oil Alert system (applicable types) will automatically stop
the engine before the oil level falls below safe limits. However,
to avoid the inconvenience of an unexpected shutdown, always
check the engine oil level before startup.
Check the air filter element (see page ). A dirty air filter
3.
9
element will restrict air flow to the carburetor, reducing engine
performance.
Check the equipment powered by this engine.
4.
Review the instructions provided with the equipment powered
by this engine for any precautions and procedures that should
be followed before engine startup.
OONN
2.
To start a cold engine, move the choke lever to the CLOSED
position.
CCHHOOKKEE LLEEVVEERR
CCLLOOSSEEDD
OOPPEENN
To restart a warm engine, leave the choke lever in the OPEN
position.
CCLLOOSSEEDD
ENGLISH
3
3.
Turn the engine switch to the ON position.
SETTING ENGINE SPEED
ENGINE SWITCH
ON
4.
Pull the starter grip lightly until you feel resistance, then pull
briskly. Return the starter grip gently.
(EQUIPMENT SIDE)
ON
Position the throttle lever for the desired engine speed.
For engine speed recommendations, refer to the instructions
provided with the equipment powered by this engine.
MMAAXX..
THROTTLE LEVER
MMIINN..
MMAAXX..
MMIINN..
STARTER GRIP
Do not allow the starter grip to snap back against the engine.
Return it gently to prevent damage to the starter.
5.
If the choke lever has been moved to the CLOSED position to
start the engine, gradually move it to the OPEN position as the
engine warms up.
CHOKE LEVER
OOPPEENN
OOPPEENN
CLOSED
4
ENGLISH
STOPPING THE ENGINE
To stop the engine in an emergency, simply turn the engine switch
to the OFF position. Under normal conditions, use the following
procedure.
Move the throttle lever to the MIN. position.1.
MMIINN..
THROTTLE LEVER
2.
Turn the engine switch to the OFF position.
ENGINE SWITCH
3.
Turn the fuel valve lever to the OFF position.
OOFFFF
MMIINN..
OOFFFF
OOFFFF
FUEL VALVE
LEVER
OFF
ENGLISH
5
SERVICING YOUR ENGINE
THE IMPORTANCE OF MAINTENANCE
Good maintenance is essential for safe, economical and troublefree operation. It will also help reduce pollution.
Improper maintenance, or failure to correct a
problem before operation, can cause a malfunction in
which you can be seriously hurt or killed.
Always follow the inspection and maintenance
recommendations and schedules in this owner’s
manual.
To help you properly care for your engine, 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 engine under severe conditions, such as
sustained high-load or high-temperature operation, or use in
unusually wet or dusty conditions, consult your servicing dealer
for recommendations applicable to your individual needs and use.
Maintenance, replacement, or repair of the emission control
devices and systems may be performed by any engine repair
establishment or individual, using parts that are ‘‘certified’’ to
EPA standards.
MAINTENANCE SAFETY
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.
Failure to properly follow maintenance instructions
and precautions can cause you to be seriously hurt or
killed.
Always follow the procedures and precautions in this
owner’s manual.
SAFETY PRECAUTIONS
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.
−
Operate outside away from open windows or doors.
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 non-flammable solvent,
not gasoline, to clean parts. Keep cigarettes, sparks and flames
away from all fuel related parts.
Remember that an authorized Honda servicing dealer knows your
engine best and is fully equipped to maintain and repair it.
To ensure the best quality and reliability, use only new genuine
Honda parts or their equivalents for repair and replacement.
MAINTENANCE SCHEDULE
Each
First
Every 3
Every 6
Every
REGULAR SERVICE PERIOD (1)
use
month
months
Perform at every indicated month
or operating hour interval,
whichever comes first.
ITEM
Engine oil
Air filter
Spark plug
Spark arrester
(applicable types)
Fuel tank and
filter
Idle speed
Valve clearance
Combustion chamber
Fuel tube
＊
See shop manual.
(1)
For commercial use, log hours of operation to determine
Check level
Change
Check
Clean
Check-adjust
Replace
Clean
Clean
Check-adjust
Check-adjust
Clean
Check
or
10 hrs.
Every 2 years (Replace if necessary) (4)
months
or
or
25 hrs.
50 hrs.
(2)
After every 300 hrs. (4)
Every 2
year
years
or
or
100 hrs.
300 hrs.
(3)
(4)
(4)
(4)
proper maintenance intervals.
(2)
Service more frequently when used in dusty areas.
Refer
to
page
8
9
9
10
＊
＊
＊
＊
＊
(3)
Change engine oil every 25 hours when used under heavy load
or in high ambient temperatures.
(4)
These items should be serviced by your Honda servicing
dealer, unless you have the proper tools and are mechanically
proficient. Refer to the Honda shop manual for service
procedures.
Failure to follow this maintenance schedule could result in nonwarrantable failures.
6
ENGLISH
REFUELING
Recommended Fuel
Unleaded gasoline
U.S.
Except U.S. Keep gasoline away from appliance pilot lights, barbecues,
Pump octane rating 86 or higher
Research octane rating 91 or higher
Pump octane rating 86 or higher
3.
Refuel carefully to avoid spilling fuel. Do not fill the fuel tank
completely. It may be necessary to lower the fuel level
depending on operating conditions. After refueling, tighten the
fuel filler cap securely.
electric appliances, power tools, etc.
This engine is certified to operate on unleaded gasoline with a
pump octane rating of 86 or higher (a research octane rating of 91
or higher).
Refuel in a well-ventilated area with the engine stopped. If the
engine has been running, allow it to cool first. Never refuel the
engine inside a building where gasoline fumes may reach flames
or sparks.
You may use regular 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.
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.
Gasoline is highly flammable and explosive, and you
can be burned or seriously injured when refueling.
Stop engine and keep heat, sparks, and flame away.
Refuel only outdoors.
Wipe up spills immediately.
Fuel can damage paint and some types of 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.
Spilled fuel is not only a fire hazard, it causes environmental
damage. Wipe up spills immediately.
ENGINE OIL
Oil is a major factor affecting performance and service life. Use
4-stroke automotive detergent oil.
Recommended Oil
Use 4-stroke motor oil that meets or exceeds the requirements for
API service category SJ or later (or equivalent). Always check the
API service label on the oil container to be sure it includes the
letters SJ or later (or equivalent).
AMBIENT TEMPERATURE
SAE 10W-30 is recommended for general use. Other viscosities
shown in the chart may be used when the average temperature in
your area is within the indicated range.
Never use stale or contaminated gasoline or oil/gasoline mixture.
Avoid getting dirt or water in the fuel tank.
Move at least 1 meter (3 feet) away from the fueling source and
site before starting the engine.
With the engine stopped and on a level surface, remove the fuel
1.
filler cap and check the fuel level. Refill the tank if the fuel level
is low.
Add fuel to the bottom of the fuel level mark of the fuel tank. Do
2.
not overfill. Wipe up spilled fuel before starting the engine.
FUEL FILLER CAP
FUEL LEVEL
MARK
MAXIMUM
FUEL LEVEL
ENGLISH
7
Oil Level Check Oil Change
Check the engine oil level with the engine stopped and in a level
position.
1.
Remove the oil filler cap/dipstick and wipe it clean.
2.
Insert the oil filler cap/dipstick into the oil filler neck as shown,
but do not screw it in, then remove it to check the oil level.
If the oil level is near or below the lower limit mark on the
3.
dipstick, fill with the recommended oil (see page ) to the
7
upper limit mark (bottom edge of the oil fill hole). Do not overfill.
4.
Reinstall the oil filler cap/dipstick.
OIL FILLER CAP/DIPSTICK
UPPER LIMIT
OIL FILLER CAP/
DIPSTICK
OIL FILL HOLE
(bottom edge)
LOWER LIMIT
Drain the used oil when the engine is warm. Warm oil drains
quickly and completely.
1.
Place a suitable container below the engine to catch the used oil,
then remove the oil filler cap/dipstick, oil drain plug and washer.
2.
Allow the used oil to drain completely, then reinstall the oil drain
plug and new washer, and tighten the oil drain plug securely.
Please dispose of used motor oil in a manner that is compatible
with the environment. We suggest you take used oil in a sealed
container to your local recycling center or service station for
reclamation. Do not throw it in the trash, pour it on the ground,
or pour it down a drain.
OIL FILLER CAP/
DIPSTICK
SEALING
WASHER
OIL DRAIN PLUG
Running the engine with a low oil level can cause engine
damage. This type of damage is not covered by the
Distributor’s
Limited Warranty.
The Oil Alert system (applicable types) will automatically stop
the engine before the oil level falls below the safe limit.
However, to avoid the inconvenience of an unexpected
shutdown, always check the engine oil level before startup.
With the engine in a level position, fill with the recommended oil
3.
(see page ) to the upper limit mark (bottom edge of the oil fill
7
hole).
OIL FILLER CAP/DIPSTICK
UPPER LIMIT
LOWER LIMIT
Running the engine with a low oil level can cause engine
damage. This type of damage is not covered by the
Distributor’s
Limited Warranty.
The Oil Alert system (applicable types) will automatically stop
the engine before the oil level falls below the safe limit.
However, to avoid the inconvenience of an unexpected
shutdown, fill to the upper limit, and check the oil level regularly.
Reinstall the oil filler cap/dipstick securely.
4.
8
ENGLISH
AIR CLEANER
SPARK PLUG
A dirty air cleaner will restrict air flow to the carburetor, reducing
engine performance. If you operate the engine in very dusty areas,
clean the air filter more often than specified in the MAINTENANCE
SCHEDULE.
Operating the engine without an air filter, or with a damaged air
filter, will allow dirt to enter the engine, causing rapid engine wear.
This type of damage is not covered by the
Distributor’s Limited
Warranty.
Inspection
Remove the air cleaner cover and inspect the filter element. Clean
or replace a dirty filter element. Always replace a damaged filter
element.
Cleaning
1.
Clean the filter element in warm soapy water, rinse, and allow to
dry thoroughly. Or clean in non-flammable solvent and allow to
dry.
Dip the filter element in clean engine oil, then squeeze out all
2.
excess oil. The engine will smoke when started if too much oil is
left in the element.
Recommended Spark Plugs:
CR5HSB (NGK)
U16FSR-UB (DENSO)
The recommended spark plug has the correct heat range for
normal engine operating temperatures.
An incorrect spark plug can cause engine damage.
For good performance, the spark plug must be properly gapped
and free of deposits.
1.
Disconnect the spark plug cap, and remove any dirt from around
the spark plug area.
2.
Remove the spark plug with a 5/8-inch spark plug wrench.
SPARK PLUG WRENCH
SPARK PLUG CAP
Wipe dirt from the air cleaner body and cover, using a moist rag.
3.
Be careful to prevent dirt from entering the carburetor.
AIR CLEANER BODY
AIR CLEANER COVER
FILTER
ELEMENT
Inspect the spark plug.
3.
Replace it if damaged or
badly fouled, if the sealing
washer is in poor condition,
or if the electrode is worn.
4.
Measure the spark plug
−
0.60 0.70 mm
−
(0.024 0.028 in)
SIDE
ELECTRODE
electrode gap with a wiretype feeler gauge. Correct the
gap, if necessary, by carefully
SEALING
WASHER
bending the side electrode.
The gap should be:
0.60 0.70 mm (0.024 0.028 in)
−−
Install the spark plug carefully,
5.
by hand, to avoid crossthreading.
After the spark plug is seated, tighten with a 5/8-inch spark plug
6.
wrench to compress the sealing washer.
When installing a new spark plug, tighten 1/2 turn after the spark
7.
plug seats to compress the washer.
When reinstalling the original spark plug, tighten 1/8 1/4 turn
8.
−
after the spark plug seats to compress the washer.
A loose spark plug can overheat and damage the engine.
Overtightening the spark plug can damage the threads in the
cylinder head.
9.
Attach the spark plug cap to the spark plug.
ENGLISH
9
SPARK ARRESTER (optional equipment)
HELPFUL TIPS & SUGGESTIONS
Your engine is not factory-equipped with a spark arrester. In some
areas, it is illegal to operate an engine without a spark arrester.
Check local laws and regulations. A spark arrester is available
from authorized Honda servicing dealers.
The spark arrester must be serviced every 100 hours to keep it
functioning as designed.
If the engine has been running, the muffler will be hot. Allow it to
cool before servicing the spark arrester.
Spark Arrester Removal
1.
Remove the three 5 mm bolts from the muffler protector and
remove the muffler protector.
2.
Remove the special screw from the spark arrester, and remove
the spark arrester from the muffler.
MUFFLER
SPECIAL SCREW
STORING YOUR ENGINE
Storage Preparation
Proper storage preparation is essential for keeping your engine
trouble-free and looking good. The following steps will help to
keep rust and corrosion from impairing your engine’s function and
appearance, and will make the engine easier to start when you use
it again.
Cleaning
If the engine has been running, allow it to cool for at least half an
hour before cleaning. Clean all exterior surfaces, touch up any
damaged paint, and coat other areas that may rust with a light film
of oil.
Using a garden hose or pressure washing equipment can force
water into the air cleaner or muffler opening. Water in the air
cleaner will soak the air filter, and water that passes through the
air filter or muffler can enter the cylinder, causing damage.
Fuel
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 engine deteriorates
during storage, you may need to have the carburetor and other
fuel system components serviced or replaced.
SPARK ARRESTER
MUFFLER PROTECTOR
5mm
BOLTS
Spark Arrester Cleaning & Inspection
1.
Use a brush to remove carbon deposits from the spark arrester
screen. Be careful not to damage the screen. Replace the spark
arrester if it has breaks or holes.
SPARK ARRESTER SCREEN
2.
Install the spark arrester and muffler protector in the reverse
order of disassembly.
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 within a few months, or even
less if the gasoline was not fresh when you filled the fuel tank.
Fuel system damage or engine performance problems resulting
from neglected storage preparation are not covered under the
Distributor’s Limited Warranty
.
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 the fuel tank and carburetor.
Adding a Gasoline Stabilizer to Extend Fuel Storage Life
When adding a gasoline stabilizer, fill the fuel tank with fresh
gasoline. If only partially filled, air in the tank will promote fuel
deterioration during storage. If you keep a container of gasoline
for refueling, be sure that it contains only fresh gasoline.
1.
Add gasoline stabilizer following the manufacturer’s instructions.
2.
After adding a gasoline stabilizer, run the engine outdoors for 10
minutes to be sure that treated gasoline has replaced the
untreated gasoline in the carburetor.
3.
Stop the engine, and move the fuel valve lever to the OFF
position.
10
ENGLISH
Draining the Fuel Tank and Carburetor
Gasoline is highly flammable and explosive, and you
can be burned or seriously injured when handling
fuel.
Stop engine and keep heat, sparks, and flame away.
Handle fuel only outdoors.
Wipe up spills immediately.
1.
Place an approved gasoline container below the carburetor, and
use a funnel to avoid spilling fuel.
Engine Oil
Change the engine oil (see page ).
8
Engine Cylinder
1.
Remove the spark plug (see page ).
2.
Pour a tablespoon 5 10 cm
−−
9
(5 10 cc) of clean engine oil into
the cylinder.
Pull the starter grip several times to distribute the oil in the
3.
cylinder.
4.
Reinstall the spark plug.
2.
Drain the fuel tank and carburetor.
CARBURETOR EQUIPPED WITH A DRAIN HOSE AND SCREW:
Loosen the carburetor drain screw, then move the fuel valve to
the ON position.
CARBURETOR DRAIN HOSE
DRAIN SCREW
CARBURETOR EQUIPPED WITH DRAIN BOLT:
Remove the carburetor drain bolt, then move the fuel valve to
the ON position.
CARBURETOR
5.
Pull the starter grip slowly until resistance is felt and the rib on
the flywheel aligns with the notch on the fan cover. This will
close the valves so moisture cannot enter the engine cylinder.
Return the starter grip gently.
Aligntheribontheflywheelwith
the notch on the fan cover.
DRAIN BOLT
3.
After all the fuel has drained into the container, reinstall the
drain bolt (carburetor equipped with a drain bolt type only).
Tighten the drain bolt or drain screw securely.
ENGLISH
11
Storage Precautions
If your engine will be stored with gasoline in the fuel tank and
carburetor, it is important to reduce the hazard of gasoline vapor
ignition. Select a well-ventilated storage area away from any
appliance that operates with a flame, such as a furnace, water
heater, or clothes dryer. Also avoid any area with a sparkproducing electric motor, or where power tools are operated.
If possible, avoid storage areas with high humidity, because that
promotes rust and corrosion.
Keep the engine level in storage. Tilting can cause fuel or oil
leakage.
With the engine and exhaust system cool, cover the engine to
keep out dust. A hot engine and exhaust system can ignite or melt
some materials. Do not use sheet plastic as a dust cover.
A nonporous cover will trap moisture around the engine,
promoting rust and corrosion.
Removal from Storage
Check your engine as described in the
CHECKS
If the fuel was drained during storage preparation, fill the tank with
fresh gasoline. If you keep a container of gasoline for refueling, be
sure it contains only fresh gasoline. Gasoline oxidizes and
deteriorates over time, causing hard starting.
If the cylinder was coated with oil during storage preparation, the
engine will smoke briefly at startup. This is normal.
TRANSPORTING
If the engine has been running, allow it to cool for at least 15
minutes before loading the engine-powered equipment on the
transport vehicle. A hot engine and exhaust system can burn you
and can ignite some materials.
Keep the engine level when transporting to reduce the possibility
of fuel leakage. Turn the fuel valve to the OFF position (see
page ).
section of this manual (see page ).
5
BEFORE OPERATION
3
TAKING CARE OF UNEXPECTED PROBLEMS
ENGINE WILL
NOT START
1.
Check control
positions.
2.
Check engine
oil level.
3.
Check fuel.
4.
Remove and
inspect spark
plug.
5.
Take engine to
an authorized
Honda
servicing
dealer, or refer
to shop
manual.
ENGINE LACKS
POWER
1.
Check air filter.
2.
Check fuel.
3.
Take engine to
an authorized
Honda
servicing
dealer, or refer
to shop
manual.
Possible Cause Correction
Fuel valve OFF.
Choke open.
Engine switch
OFF.
Engine oil level
low
(Oil Alert stops
engine).
Out of fuel.
Bad fuel; engine
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).
Fuel filter
restricted,
carburetor
malfunction,
ignition
malfunction,
valves stuck, etc.
Possible Cause Correction
Filter element
restricted.
Bad fuel; engine
stored without
treating or
draining
gasoline, or
refueled with
bad gasoline.
Fuel filter
restricted,
carburetor
malfunction,
ignition
malfunction,
valves stuck, etc.
Move lever to ON
position.
Move lever to
CLOSED position
unless the engine
is warm.
Turn engine switch
to ON position.
Fill with the
recommended oil
to the proper level
(p. 8).
Refuel (p. 7).
Drain fuel tank and
carburetor (p. 11).
Refuel with fresh
gasoline (p. 7).
Gap or replace
spark plug (p. 9).
Dry and reinstall
spark plug. Start
engine with
throttle lever in
MAX. position.
Replace or repair
faulty components
as necessary.
Clean or replace
filter element
(p. 9).
Drain fuel tank and
carburetor (p. 11).
Refuel with fresh
gasoline (P. 7).
Replace or repair
faulty components
as necessary.
12
ENGLISH
TECHNICAL INFORMATION
Carburetor Modifications for High Altitude Operation
Serial Number Location
Record the engine serial number, type and purchase date in the
space below. You will need this information when ordering parts
and when making technical or warranty inquiries.
ENGINE TYPE
ENGINE SERIAL NUMBER
Engine serial number: __ __ __ __ __ __ __ __ __ __ __
−
At high altitude, 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 performance can be improved by specific
modifications to the carburetor. If you always operate your engine
at altitudes above 1,500 meters (5,000 feet), have your servicing
dealer perform this carburetor modification. This engine, when
operated at high altitude with the carburetor modifications for
high altitude use, will meet each emission standard throughout its
useful life.
Even with carburetor modification, engine horsepower will
decrease about 3.5% for each 300-meter (1,000-foot) 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 high altitude operation,
the air-fuel mixture will be too lean for low altitude use. Operation
at altitudes below 1,500 meters (5,000 feet) with a modified
carburetor may cause the engine to overheat and result in serious
engine damage. For use at low altitudes, have your servicing
dealer return the carburetor to original factory specifications.
Engine type: ___ ___ ___ ___
Date Purchased: ______ / ______ / ______
ENGLISH
13
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 lean carburetor settings and other systems to
reduce the emissions of carbon monoxide, oxides of nitrogen, and
hydrocarbons. Additionally, Honda fuel systems utilize
components and control technologies to reduce evaporative
emissions.
The U.S., California Clean Air Acts and Environment Canada
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 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.
Altering or defeating the governor linkage or speed-adjusting
mechanism to cause the engine to operate outside its design
parameters.
Maintenance
Follow the maintenance schedule on page . Remember that this
6
schedule is based on the assumption that your machine will be
used for its designed purpose. Sustained high-load or hightemperature operation, or use in unusually wet or dusty conditions,
will require more frequent service.
Air Index
An Air Index Information hang tag/label is applied to engines
certified to an emission durability time period in accordance with
the requirements of the California Air Resources Board.
The bar graph is intended to provide you, our customer, the ability
to compare the emissions performance of available engines. The
lower the Air Index, the less pollution.
The durability description is intended to provide you with
information relating to the engine’s emission durability period.
The descriptive term indicates the useful life period for the engine’s
emission control system. See your
Warranty
for additional information.
Emission Control System
Descriptive Term Applicable to Emissions Durability Period
Moderate
Intermediate
Extended
50 hours [0 80 cm
−−
(0 80 cc) inclusive]
125 hours [greater than 80 cm
125 hours [0 80 cm
−−
(0 80 cc) inclusive]
250 hours [greater than 80 cm
300 hours [0 80 cm
−−
(0 80 cc) inclusive]
500 hours [greater than 80 cm
1,000 hours [225 cm
(225 cc) and greater]
(80 cc)]
(80 cc)]
(80 cc)]
The Air Index Information hang tag/label must remain on the
engine until it is sold. Remove the hang tag before operating the
engine.
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 (backfiring).
Black exhaust smoke or high fuel consumption.
Replacement Parts
The emission control systems on your Honda engine were
designed, built, and certified to conform with EPA, California and
Canadian emission regulations. We recommend the use of
genuine Honda parts whenever you have maintenance done.
These original-design replacement parts are manufactured to the
same standards as the original parts, so you can be confident of
their performance. The use of replacement parts that are not of the
original design and quality may impair the effectiveness of your
emission control system.
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.
14
ENGLISH
Specifications Wiring Diagrams
(PTO shaft type S)
Length Width
Height
Dry mass [weight]
Engine type
Displacement
[Bore Stroke]
Net power
(in accordance with SAE J1349 )
Max. Net torque
(in accordance with SAE J1349 )
Fuel tank capacity
Engine oil capacity
Cooling system
Ignition system
PTO shaft rotation
＊
The power rating of the engine indicated in this document is the
××
×
××
225 274 353 mm
××
(8.9 10.8 13.9 in)
5.5 kg (12.1 lbs)
4-stroke, overhead valve, single cylinder
49.4 cm
××
[41.8 36.0 mm (1.65 1.42 in)]
(3.01 cu-in)
1.6 kW (2.2 PS, 2.1 bhp) at 7,000 rpm
2.7 N·m (0.28 kgf·m, 2.0 lbf·ft) at
4,500 rpm
0.77
(0.203 US gal , 0.169 Imp gal)
0.25
(0.26 US qt , 0.22 Imp qt)
Forced air
Transistor magneto
Counterclockwise
net power output tested on a production engine for the engine
model and measured in accordance with SAE J1349 at 7,000
rpm (Net Power) and at 4,500 rpm (Max. Net Torque). Mass
production engines may vary from this value.
Actual power output for the engine installed in the final machine
will vary depending on numerous factors, including the
operating speed of the engine in application, environmental
conditions, maintenance, and other variables.
Without Oil Alert
With Oil Alert
Tuneup Specifications
ITEM SPECIFICATION
Spark plug gap
0.60 0.70 mm
(0.024 0.028 in)
Idle speed
Valve clearance
(cold)
2,500 200 rpm
IN: 0.08 0.02 mm
EX: 0.11 0.02 mm
Other
specifications
Quick Reference Information
Fuel
Unleaded gasoline (Refer to page 7)
U.S.
Except
U.S.
Engine oil
SAE 10W-30, API SJ or later, for general use.
Refer to page 7.
Spark plug
CR5HSB (NGK)
U16FSR-UB (DENSO)
Maintenance
Before each use:
Check engine oil level. Refer to page 8.
Check air filter. Refer to page 9.
First 10 hours:
Change engine oil. Refer to page 8.
Subsequent:
Refer to the maintenance schedule on page 7.
MAINTENANCE
−
Refer to page 9
−
±
±
±
See your
authorized
Honda dealer
No other adjustments needed.
Pump octane rating 86 or higher
Research octane rating 91 or higher
Pump octane rating 86 or higher
Bl
Bu
G
W
Black
Yellow
Y
Blue
Green
Red
R
White
Br
O
Lb
Lg
P
Gr
Brown
Orange
Light blue
Light green
Pink
Gray
OIL LEVEL SWITCH
(A)
OIL ALERT UNIT
(B)
ENGINE SWITCH
(C)
IGNITION COIL
(D)
(E)
SPARK PLUG
ENGLISH
15
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