Honda Automobiles GXV50 User Manual
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
GXV50
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 is 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.
2005 Honda Motor Co., Ltd. All Rights Reserved
37Z4D600
00X37-Z4D-6000
EM3
−
PRINTED IN U.S.
GXV50U
2005.05
CONTENTS
.......................INTRODUCTION .1
SAFETY INDICATION
................................LOCATION .2
COMPONENT & CONTROL
................................LOCATION .2
................................FEATURES .3
BEFORE OPERATION
....................................CHECKS .3
..............................OPERATION .4
SAFE OPERATING
THE IMPORTANCE OF
MAINTENANCE
............................SCHEDULE .6
...........................REFUELING .7
...........................ENGINE OIL .7
.........................Oil Change .8
........................AIR CLEANER .9
..........................Inspection .9
............................Cleaning .9
ENGLISH
................SAFETY MESSAGES .1
..........SAFETY INFORMATION .2
.....................PRECAUTIONS .4
......STARTING THE ENGINE .4
.....SETTING ENGINE SPEED .5
......STOPPING THE ENGINE .5
.....SERVICING YOUR ENGINE .6
....................MAINTENANCE .6
......MAINTENANCE SAFETY .6
.......SAFETY PRECAUTIONS .6
............Recommended Oil .7
..................Oil Level Check .8
........................SPARK PLUG .9
.............SPARK ARRESTER .10
HELPFUL TIPS &
......................SUGGESTIONS .10
...STORING YOUR ENGINE .10
................TRANSPORTING .11
TAKING CARE OF
....UNEXPECTED PROBLEMS .12
TECHNICAL & CONSUMER
.......................INFORMATION .12
.....Serial Number Location .12
.....Remote Control Linkage .12
Carburetor Modifications for
.....High Altitude Operation .13
...............Oxygenated Fuels .13
Emission Control System
.........................Information .13
..............................Air Index .14
.....................Specifications .14
........Tuneup Specifications .14
Quick Reference
.........................Information .15
..................Wiring Diagram .15
.CONSUMER INFORMATION .16
Distributor/Dealer Locator
.........................Information .16
Customer Service
.........................Information .16
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.
SAFETY INDICATION LOCATION
This indication warns you of potential hazards that can cause
serious injury. Read it carefully.
STARTER GRIP
OIL DRAIN PLUG
FUEL CAP VENT KNOB
SPARK PLUG
RECOIL STARTER
OIL FILLER CAP/
DIPSTICK
MUFFLER
FUEL FILLER CAP
READ OWNER’S MANUAL BEFORE OPERATION.
CHOKE LEVER
FUEL TANK
THROTTLE LEVER
FUEL VALVE LEVER
AIR CLEANER
2
ENGLISH
BEFORE OPERATION CHECKSFEATURES
Centrifugal Clutch (applicable types)
The centrifugal clutch automatically engages and transmits power
when engine speed is increased above approximately 2,900 rpm.
At idle speed, the clutch is disengaged.
Do not run the engine without mounting it on equipment that
includes the centrifugal clutch drum and housing, or centrifugal
force will cause the clutch shoes to contact and damage the
engine case.
Fuel tank Vent
The cap is provided with a vent knob to seal the fuel tank.
Open the fuel tank vent by turning the vent knob at least 2 or 3
turns conuterclockwise.
CCLLOOSSEE
OOPPEENN
FUEL CAP
VENT KNOB
IS YOUR ENGINE READY TO GO?
For your safety, and to maximize the service life of your
equipment, it is very important to take a few moments before you
operate the 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 preoperation inspection before
each operation, and correct any problem.
Before beginning your preoperation checks, be sure the engine is
level and the engine switch on the equipment is in the OFF
position.
Always check the following items before you start the engine:
Check the General Condition of the Engine
Look around and underneath the engine for signs of oil or
1.
gasoline leaks.
FUEL FILLER CAP
Remove any excessive dirt or debris, especially around the
2.
muffler and recoil starter.
Look for signs of damage.
3.
4.
Check that all shields and covers are in place, and all nuts, bolts,
and screws are tightened.
Check the Engine
1.
Check the fuel level (see page ). Starting with a full tank will
7
help to eliminate or reduce operating interruptions for refueling.
2.
Check the engine oil level (see page ). Running the engine
8
with a low oil level can cause engine damage.
3.
Check the air filter element (see page ). A dirty air filter
9
element will restrict air flow to the carburetor, reducing engine
performance.
4.
Check the equipment powered by this engine.
Review the instructions provided with the equipment powered
by this engine for any precautions and procedures that should
be followed before engine startup.
ENGLISH
3
OPERATION
SAFE OPERATING PRECAUTIONS
Before operating the engine for the first time, please review the
SAFETY INFORMATION
OPERATION CHECKS
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
Open the fuel tank vent by turning the vent knob at least 2 or 3
1.
turns conuterclockwise.
section on page and the
on page .
3
2
FUEL CAP VENT KNOB
BEFORE
To start a cold engine, move the choke lever to the CLOSED
3.
position.
To restart a warm engine, leave the choke lever in the OPEN
position.
CHOKE LEVER
CCLLOOSSEEDD
OOPPEENN
Turn the engine switch on the equipment to the ON position.
4.
Pull the starter grip lightly until you feel resistance, then pull
5.
OOPPEENN
briskly. Return the starter grip gently.
CLOSED
OOPPEENN
Turn the fuel valve lever to the ON position.
2.
ON
(EQUIPMENT SIDE)
STARTER GRIP
Do not allow the starter grip to snap back against the engine.
Return it gently to prevent damage to the starter.
6.
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
FUEL VALVE LEVER
4
ENGLISH
OOPPEENN
SETTING ENGINE SPEED STOPPING THE ENGINE
Position the throttle lever for the desired engine speed. To stop the engine in an emergency, simply turn the engine switch
on the equipment to the OFF position. Under normal conditions,
The throttle lever shown here will be connected to a remote
use the following procedure.
control on the equipment powered by this engine. Refer to the
instructions provided with that equipment for remote control
1.
Move the throttle lever to the MIN. position.
information and for engine speed recommendations.
The throttle lever shown here will be connected to a remote
control on the equipment powered by this engine. Refer to the
instructions provided with the equipment for remote control
information.
TTHHRROOTTTTLLEE LLEEVVEERR
MMAAXX..
MMIINN..
TTHHRROOTTTTLLEE LLEEVVEERR
MIN.
Turn the engine switch on the equipment to the OFF position.
2.
Turn the fuel valve lever to the OFF position.
3.
FUEL VALVE LEVER
OFF
Close the fuel tank vent by turning vent knob clockwise.
4.
VENT KNOB
ENGLISH
CCLLOOSSEE
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.
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.
Be sure there is adequate ventilation whenever you operate
the engine.
−
Burns from hot parts.
Let the engine and exhaust system cool before touching.
−
Injury from moving parts.
Do not run the engine unless instructed to do so.
Read the instructions before you begin, and make sure you have
the tools and skills required.
To reduce the possibility of fire or explosion, be careful when
working around gasoline. Use only a nonflammable solvent, not
gasoline, to clean parts. Keep cigarettes, sparks and flames
away from all fuel related parts.
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
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.
REGULAR SERVICE PERIOD (1)
Perform at every indicated month
or operating hour interval,
whichever comes first.
ITEM
Engine oil
Air cleaner
Spark plug
Spark arrester
(applicable types)
Fuel tank and filter
Idle speed
Valve clearance
Combustion chamber
Fuel tubes
: 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
Each
First
use
month
or
10 hrs.
After every 300 hrs. (4)
Every 2 years (Replace if necessary) (4)
Every
3
months
or
25 hrs.
(2)
Every
6
months
or
50 hrs.
(3)
proper maintenance intervals.
(2)
Service more frequently when used in dusty areas.
(3)
Change engine oil every 25 hours when used under heavy
load or in high ambient temperatures.
Every
year
or
100
hrs.
(4)
(4)
Every
2years
or
300
hrs.
(4)
Refer
to
page
8
9
9
10
＊
＊
＊
＊
＊
(4)
These items should be serviced by your servicing dealer,
unless you have the proper tools and are mechanically
proficient. Refer to the Honda shop manual for service
procedures.
Failure to follow this maintenance schedule could result in nonwarrantable failures.
6
ENGLISH
REFUELING
Recommended Fuel
Unleaded gasoline
U.S.
Except U.S.
Pump octane rating 86 or higher
Research octane rating 91 or higher
Pump octane rating 86 or higher
This engine is certified to operate on unleaded gasoline. Unleaded
gasoline produces fewer engine and spark plug deposits and
extends exhaust system life.
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.
Refuel in a well-ventilated area before starting the engine. If the
engine has been running, allow it to cool. Refuel carefully to avoid
spilling fuel. Do not fill above the fuel level mark. After refueling,
tighten the fuel filler cap securely.
Never refuel the engine inside a building where gasoline fumes
may reach flames or sparks. Keep gasoline away from appliance
pilot lights, barbecues, electric appliances, power tools, etc.
Spilled fuel is not only a fire hazard, it causes environmental
damage. Wipe up spills immediately.
For information regarding oxygenated fuels, please refer to page
13
.
ENGINE OIL
Oil is a major factor affecting performance and service life. Use
4-stroke automotive detergent oil.
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.
Never use stale or contaminated gasoline or oil/gasoline mixture.
Avoid getting dirt or water in the fuel tank.
Occasionally you may hear a light ‘‘spark knock’’ or ‘‘pinging’’
(metallic rapping noise) while operating under heavy loads. This is
no cause for concern.
If spark knock or pinging occurs at a steady engine speed, under
normal load, change brands of gasoline. If spark knock or pinging
persists, see an authorized Honda servicing dealer.
Running the engine with persistent spark knock or pinging can
cause engine damage.
Running the engine with persistent spark knock or pinging is
considered misuse, and the
Distributor’s Limited Warranty
does
not cover parts damaged by misuse.
1.
With the engine stopped and on a level surface, remove the fuel
filler cap and check the fuel level. Refill the tank if the fuel level
is low.
Recommended Oil
SAE Viscosity Grades
Use 4-stroke motor oil that
meets or exceeds the
requirements for API service
classification SJ, SL, or
equivalent. Always check the
API service label on the oil
container to be sure it includes
the letters SJ, SL, 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.
The recommended operating range of this engine is 5°C to 40°C
−
(23°F to 104°F).
2.
Add fuel to the bottom of the fuel level mark of the fuel tank. Do
not overfill. Wipe up spilled fuel before starting the engine.
FUEL FILLER CAP
FUEL LEVEL MARK
MAXIMUM FUEL
LEVEL
ENGLISH
7
Oil Level Check
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.
With the engine in a level position, fill to the upper limit mark on
3.
the dipstick with the recommended oil (see page 7 ).
OIL FILLER CAP/DIPSTICK
3.
If the oil level is near or below the lower limit mark on the
dipstick, fill with the recommended oil (see page 7 ) to the upper
limit mark.
OIL FILLER CAP/DIPSTICK
UPPER LIMIT
LOWER LIMIT
4.
Reinstall the oil filler cap/dipstick and tighten securely.
Running the engine with a low oil level can cause engine damage.
Oil Change
Drain the used oil when the engine is warm. Warm oil drains
quickly and completely.
UPPER LIMIT
LOWER LIMIT
Running the engine with a low oil level can cause engine
damage.
Reinstall the oil filler cap/dipstick and tighten securely.
4.
Place a suitable container below the engine to catch the used oil,
1.
then remove the oil filler cap/dipstick, oil drain plug and washer.
Allow the used oil to drain completely, then reinstall the oil drain
2.
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 down a drain.
OIL FILLER CAP/DIPSTICK
DRAIN PLUG
SEALING WASHER
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
Press the upper latch tab on the top of the air cleaner cover, and
remove the cover. Check the filter element to be sure it is clean
and in good condition.
If the filter element is dirty, clean it as described on this page.
Replace the filter element if it is damaged.
Reinstall the filter element and air cleaner cover securely.
Cleaning
Clean the filter element in warm soapy water, rinse, and allow to
1.
dry thoroughly. Or clean in nonflammable solvent and allow to
dry.
Recommended Spark Plugs:
CR5HSB (NGK)
,
U16FSR-UB (DENSO)
The recommended spark plug is 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.
Disconnect the spark plug cap, and remove any dirt from around
1.
the spark plug area.
Remove the spark plug with a 5/8-inch spark plug wrench.
2.
SPARK PLUG CAP
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 foam.
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
FILTER ELEMENT
LOWER TABS
UPPER TABS
SPARK PLUG WRENCH
Inspect the spark plug.
3.
Replace it if damaged, badly
SIDE ELECTRODE
fouled, if the sealing washer
is in poor condition, or if the
electrode is worn.
Measure the spark plug
4.
−
0.60 0.70 mm
−
(0.024 0.028 in)
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.
AIR CLEANER COVER
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.
Attach the spark plug cap to the spark plug.
9.
ENGLISH
−
9
SPARK ARRESTER (applicable types)
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
SPARK ARRESTER
MUFFLER
PROTECTOR
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.
SPECIAL SCREW
5mmBOLTS
Spark Arrester Cleaning & Inspection
1.
Use a brush to remove carbon deposits from the spark arrester
screen. Be careful to avoid damaging the screen.
The spark arrester must be free of breaks and holes. Replace the
spark arrester if it is damaged.
SPARK ARRESTER SCREEN
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 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.
2.
Install the spark arrester, and muffler protector in the reverse
order of disassembly.
10
Stop the engine, and turn the fuel valve lever to the OFF position
3.
(see page 5 ).
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.
2.
Remove the carburetor drain bolt and gasket, then turn the fuel
valve lever to the ON position.
CARBURETOR
GASKET
DRAIN BOLT
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
section of this manual (see page ).
BEFORE OPERATION
3
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.
3.
After all fuel has drained into the container, reinstall the
carburetor drain bolt and gasket. Tighten the carburetor drain
bolt securely.
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.
3.
Pull the starter grip several times to distribute the oil in the
cylinder.
4.
Reinstall the spark plug.
5.
Pull the starter grip slowly until resistance is felt and the notch
on the starter pulley aligns with the hole at the top of the recoil
starter cover. This will close the valves so moisture cannot enter
the engine cylinder. Return the starter grip gently.
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 lever to the OFF position. Close
the fuel tank vent by turning vent knob clockwise.
Aligntheribontheflywheelwith
the notch on the fan cover.
ENGLISH
11
TAKING CARE OF UNEXPECTED PROBLEMS TECHNICAL & CONSUMER INFORMATION
ENGINE WILL
NOT START
1.
Check control
positions.
2.
Check fuel.
3.
Remove and
inspect spark
plug.
4.
Take engine to
an authorized
Honda
servicing
dealer, or refer
to shop
manual.
Possible Cause Correction
Vent knob
Open vent knob.
CLOSE
Fuel valve OFF.
Move lever to ON
position.
Choke open.
Move lever to
CLOSED position
unless the engine
is warm.
Engine switch
OFF.
Out of fuel.
Bad fuel; engine
stored without
treating or
draining
Turn engine switch
to ON position.
Refuel (p. 7).
Drain fuel tank and
carburetor (p. 11).
Refuel with fresh
gasoline (p. 7).
gasoline, or
refueled with
bad gasoline.
Spark plug faulty,
fouled, or
Gap or replace
spark plug (p. 9).
improperly
gapped.
Spark plug wet
with fuel
(flooded engine).
Dry and reinstall
spark plug. Start
engine with
throttle lever in
MAX. position.
Fuel filter
restricted,
carburetor
Replace or repair
faulty components
as necessary.
malfunction,
ignition
malfunction,
valves stuck, etc.
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: __ __ __ __ __ __ __ __ __ __ __
−
Engine type: ___ ___ ___ ___
Date Purchased: ______ / ______ / ______
Remote Control Linkage
The throttle lever is provided with a hole for cable attachment.
THROTTLE CABLE
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
Filter element
restricted.
Bad fuel; engine
stored without
treating or
draining
Clean or replace
filter element (p. 9).
Drain fuel tank and
carburetor (p. 11).
Refuel with fresh
gasoline (p. 7).
gasoline, or
refueled with
bad gasoline.
Fuel filter
restricted,
carburetor
Replace or repair
faulty components
as necessary.
malfunction,
ignition
malfunction,
valves stuck, etc.
CABLE CLAMP
THROTTLE LEVER
5 mm SCREW
12
ENGLISH
Carburetor Modifications for High Altitude Operation
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.
If you notice any undesirable operating symptoms, try another
service station or switch to another brand of gasoline.
Fuel system damage or performance problems resulting from the
use of an oxygenated fuel containing more than the percentages
of oxygenates mentioned above are not covered under the
Distributor’s Limited Warranty
.
Emission Control System Information
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.
Oxygenated Fuels
Some conventional gasolines are being blended with alcohol or an
ether compound. These gasolines are collectively referred to as
oxygenated fuels. To meet clean air standards, some areas of the
United States and Canada use oxygenated fuels to help reduce
emissions.
If you use oxygenated fuel, be sure it is unleaded and meets the
minimum octane rating requirements.
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.
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.
Before using an oxygenated fuel, try to confirm the fuel’s contents.
Some states/provinces require this information to be posted on
the pump.
The following are the EPA approved percentages of oxygenates:
ETHANOL
(ethyl or grain alcohol) 10% by volume
You may use gasoline containing up to 10%
ethanol by volume. Gasoline containing
ethanol may be marketed under the name
Gasohol.
MTBE
(methyl tertiary butyl ether) 15% by volume
You may use gasoline containing up to 15%
MTBE by volume.
METHANOL
(methyl or wood alcohol) 5% by volume
You may use gasoline containing up to 5%
methanol by volume as long as it also
contains cosolvents and corrosion inhibitors
to protect the fuel system. Gasoline
containing more than 5% methanol by
volume may cause starting and/or
performance problems. It may also damage
metal, rubber, and plastic parts of your fuel
system.
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.
ENGLISH
13
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.
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.
Specifications
(PTO shaft S type)
Length Width
××
Height
Dry weight
Engine type
Displacement
[Bore Stroke]
×
Max. output
Max. torque
Engine oil capacity
Fuel tank capacity
Fuel consumption
Cooling system
Ignition system
PTO shaft rotation
Tuneup Specifications
Spark plug gap
Idle speed
Valve clearance
(cold)
Other
specifications
××
249 286 225 mm
××
(9.8 11.3 8.9 in)
5.2 kg (11.5 lbs)
4-stroke, overhead valve, single cylinder
49 cm
××
[41.8 36 mm (1.65 1.42 in)]
(3.0 cu-in)
1.8 kW (2.5 PS, 2.5 bhp) at 7,000 rpm
3.04 N·m (0.31 kgf·m, 2.2 lbf·ft) at
4,500 rpm
0.25
(0.26 US qt , 0.22 Imp qt)
0.5
(0.13 US gal , 0.11 Imp gal)
340 g/kWh (250 g/PSh, 0.55 lb/hph)
Forced air
Transistorized magneto
Counterclockwise
MAINTENANCEITEM SPECIFICATION
0.60 0.70 mm
−
(0.024 0.028 in)
−
2,500 200 rpm
±
IN: 0.08 0.02 mm
EX: 0.11 0.02 mm
±
±
Refer to page: 9
See your
authorized
Honda dealer
No other adjustments needed.
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 the engine’s emission durability period. The
descriptive term indicates the useful life period for the engine’s
emission control system. See your
Warranty
Descriptive Term
for additional information.
Applicable to Emissions Durability
Emission Control System
Period
Moderate
Intermediate
Extended
50 hours [0 65 cm
125 hours [greater than 65 cm
125 hours [0 65 cm
250 hours [greater than 65 cm
300 hours [0 65 cm
500 hours [greater than 65 cm
−−
(0 65 cc)]
(65 cc)]
−−
(0 65 cc)]
(65 cc)]
−−
(0 65 cc)]
(65 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.
14
ENGLISH
Quick Reference Information
Fuel
Engine oil
Spark plug
Maintenance
Wiring Diagram
(1)
Unleaded gasoline (Refer to page 7)
U.S.
Except
U.S.
Pump octane rating 86 or higher
Research octane rating 91 or higher
Pump octane rating 86 or higher
SAE 10W-30, API SJ or SL, for general use.
Refer to page 7.
CR5HSB (NGK)
U16FSR-UB (DENSO)
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 6.
Bl
(2)
(3)
SPARK PLUG
(1)
(2)
IGNITION COIL
(3)
Engine switch on the equipment
powered by the engine.
Black
Bl
ENGLISH
15
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