Honda Engine GXV610 GXV620 GXV670 Owners Manual

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INTRODUCTION
CONTENTS SAFETY MESSAGES
ENGLISH FRANÇAIS ESPAÑOL
ENGLISH
OWNER’S MANUAL
MANUEL DE L’UTILISATEUR
MANUAL DEL PROPIETARIO
DAMAGE PREVENTION MESSAGES
GXV610 · GXV620 · GXV670
1 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.
The engine exhaust from this product
contains chemicals known to the State of
California to cause cancer, birth defects
or other reproductive harm.
....................... INTRODUCTION .1
................ SAFETY MESSAGES .1
.......... SAFETY INFORMATION .2
..... SAFETY LABEL LOCATION .2
COMPONENT & CONTROL
................................ LOCATION .2
................................ FEATURES .3
BEFORE OPERATION
.................................... CHECKS .3
.............................. OPERATION .4
SAFE OPERATING
..................... PRECAUTIONS .4
...... STARTING THE ENGINE .4
...... STOPPING THE ENGINE .5
..... SETTING ENGINE SPEED .5
..... SERVICING YOUR ENGINE .6
THE IMPORTANCE OF
.................... MAINTENANCE .6
...... MAINTENANCE SAFETY .6
....... SAFETY PRECAUTIONS .6
MAINTENANCE
............................ SCHEDULE .6
........................... REFUELING .7
........................... ENGINE OIL .7
............ Recommended Oil .7
.................. Oil Level Check .7
......................... Oil Change .8
............................. OIL FILTER .8
........................ AIR CLEANER .9
.......................... Inspection .9
............................ Cleaning .9 This manual should be considered a permanent part of the engine
and should remain with the engine if resold.
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.
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.
The purpose of these messages is to help prevent damage to your
engine, other property, or the environment.You CAN be HURT if you don’t follow
instructions. You CAN be KILLED or SERIOUSLY
HURT if you don’t follow instructions. You WILL be KILLED or SERIOUSLY
HURT if you don’t follow instructions. These signal words mean:
Your engine or other property can be damaged if you
don’t follow instructions. This word means: You will also see other important messages that are preceded by
the word NOTICE. Each message tells you what the hazard is, what can happen, and
what you can do to avoid or reduce injury. United States, Puerto Rico, and U.S. Virgin Islands: 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.
2007 Honda Motor Co., Ltd. All Rights Reserved......................... FUEL FILTER .9
...................... SPARK PLUG .10
............. SPARK ARRESTER .10
HELPFUL TIPS &
...................... SUGGESTIONS .11
... STORING YOUR ENGINE .11
................ TRANSPORTING .12
TAKING CARE OF
.... UNEXPECTED PROBLEMS .12
.. TECHNICAL INFORMATION .13
..... Serial Number Location .13
Battery Connections for
.................... Electric Starter .13
..... Remote Control Linkage .14
Carburetor Modifications for
..... High Altitude Operation .14
Emission Control System
......................... Information .15
.............................. Air Index .16
..................... Specifications .16
........ Tuneup Specifications .17
Quick Reference
......................... Information .17
................ Wiring Diagrams .17
. CONSUMER INFORMATION .18
DISTRIBUTOR/DEALER
. LOCATOR INFORMATION .18
CUSTOMER SERVICE
................... INFORMATION .18
37Z6E602
00X37-Z6E-6022
GXV610R1·GXV620R1·GXV670R·GXV610U1·GXV620U1·GXV670U
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ENGLISH
COMPONENT & CONTROL LOCATION SAFETY INFORMATION
SAFETY LABEL LOCATION
SPARK PLUG FUEL FILTEROIL PRESSURE SWITCH FAN COVER
PROTECTOR TYPEPROTECTOR TYPE
(STANDARD)
RECOIL STARTER
EQUIPPED TYPESCREEN GRID
(STANDARD TYPE)
OIL FILTER OIL DRAIN BOLT
AIR CLEANER
SPARK PLUG ELECTRIC STARTER
MUFFLEROIL FILLER CAP/
DIPSTICK STARTER GRIP
(applicable types)
GXV610/GXV620
2Understand 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.
Your engine’s exhaust contains poisonous carbon monoxide.
Do not run the engine without adequate ventilation, and never
run the engine indoors. Do not allow children to operate the engine. Keep children and
pets away from the area of operation.
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.
This label warns you of potential hazards that can cause serious
injury. Read it carefully.
If the label comes off or becomes hard to read, contact your Honda
dealer for replacement.
Gasoline is highly flammable and explosive.
Turn engine off and let cool before refueling.
The engine emits toxic poisonous carbon
monoxide gas. Do not run in an enclosed area.
Read Owner’s Manual before operation.For Canadian types only:
French label comes with
the engine.
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ENGLISH
Fuel-cut Solenoid
Oil CoolerIS YOUR ENGINE READY TO GO?
Check the General Condition of the Engine
Check the Engine GXV670
(GXV670)
BEFORE OPERATION CHECKS
FEATURES
ELECTRIC STARTERSPARK PLUGOIL FILLER CAP/
DIPSTICK
OIL COOLER
HOSE
OIL FILTER
OIL COOLER
FUEL FILTER AIR CLEANEROIL PRESSURE SWITCH
SPARK PLUG
3 The engine is equipped with a fuel-cut solenoid that allows fuel to
flow to the carburetor main jet when the engine switch is in the ON
or START position and stops the flow of fuel to the main jet when
the engine switch is in the OFF position.
The engine must be connected to the battery to energize the fuel-
cut solenoid, allowing the engine to run. If the battery is
disconnected, fuel flow to the carburetor main jet will stop.
The GXV670 engine is equipped with an oil cooler to maintain the
correct oil temperature.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:
Look around and underneath the engine for signs of oil or
gasoline leaks.
Remove any excessive dirt or debris, especially around the
muffler and recoil starter.
Review the instructions provided with the equipment powered
by this engine for any precautions and procedures that should
be followed before engine startup. Check the equipment powered by this engine.
Check the air filter element (see page ). A dirty air filter
element will restrict air flow to the carburetor, reducing engine
performance. Check the engine oil level (see page ). Running the engine
with a low oil level can cause engine damage. Check the fuel level. Starting with a full tank will help to
eliminate or reduce operating interruptions for refueling. Check that all shields and covers are in place, and all nuts, bolts,
and screws are tightened. Look for signs of damage. Remove any objects or debris that my block the cooling air
intake at the recoil starter/fan cover. Running the engine with a
blocked air intake can cause engine damage. 3. 2.
1.
4.
3. 2.
1.
4.9 7 5.
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OPERATION
SAFE OPERATING PRECAUTIONS
STARTING THE ENGINE
CHOKE LEVER
CLOSED
OOPPEENNTHROTTLE LEVER
FAST
SLOW
4 Before operating the engine for the first time, please review the
SAFETY INFORMATIONsection on page and theBEFORE
OPERATION CHECKS
on page .
When the engine starts, release the key, allowing it to return to
the ON position.
Using the electric starter for more than 5 seconds at a time will
overheat the starter motor and can damage it.
If the engine fails to start within 5 seconds, release the key, and
wait at least 10 seconds before operating the starter again. Turn the key to the START position, and hold it there until the
engine starts. ELECTRIC STARTER: Operate the starter.
Turn the engine switch to the ON position. Move the throttle lever away from the SLOW position, about 1/3
of the way toward the FAST position.
Some engine applications use a remote-mounted throttle
control rather than the engine-mounted throttle lever shown
here. Refer to the instructions provided with the equipment
powered by this engine for remote control information.
Some engine applications use a remote-mounted choke control
rather than the engine-mounted choke lever shown here. Refer
to the instructions provided with the equipment powered by this
engine for remote control information. To restart a warm engine, leave the choke lever in the OPEN
position. To start a cold engine, move the choke lever to the CLOSED
position. If the fuel tank is equipped with a valve, be sure the fuel valve is
in the OPEN or ON position before attempting to start the engine. 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.Exhaust contains poisonous carbon monoxide gas
that can build up to dangerous levels in closed areas.
Breathing carbon monoxide can cause
unconsciousness or death.
Never run the engine in a closed, or even partly
closed area where people may be present. For your safety, do not operate the engine in an enclosed area
such as a garage. Your engine’s exhaust contains poisonous
carbon monoxide gas that can collect rapidly in an enclosed area
and cause illness or death.
4.
5.
1.
2.3.
2
3
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SETTING ENGINE SPEED STOPPING THE ENGINE
THROTTLE LEVER
SLOW
THROTTLE LEVER
SLOW
FFAASSTT Directiontopull
STARTER GRIP
CHOKE LEVER
OOPPEENN
CCLLOOSSEEDD
5 Position the throttle lever for the desired engine speed.
Some engine applications use a remote-mounted throttle control
rather than the engine-mounted throttle lever shown here. Refer to
the instructions provided by the equipment manufacturer.
For engine speed recommendations, refer to the instructions
provided with the equipment powered by this engine.
Do not disconnect the battery from the engine while the engine is
running. Disconnecting the battery causes the fuel-cut solenoid to
shut off the flow of fuel to the carburetor main jet, and the engine
will stop. To stop the engine in an emergency, simply turn the engine switch
to the OFF position. Under normal conditions, use the following
procedure. Refer to the instructions provided by the equipment
manufacturer.
Move the throttle lever to the SLOW position.
Some engine applications use a remote-mounted throttle
control rather than the engine-mounted throttle lever shown
here. Refer to the instructions provided with the equipment
powered by this engine for remote control information.
Turn the engine switch to the OFF position.
If the fuel tank is equipped with a valve, turn the fuel valve to the
CLOSED or OFF position. If the choke lever was moved to the CLOSED position to start the
engine, gradually move it to the OPEN position as the engine
warms up. RECOIL STARTER (applicable types):
Pull the starter grip lightly until you feel resistance, then pull
briskly in the direction of the arrow as shown below. Return the
starter grip gently.
Do not allow the starter grip to snap back against the engine.
Return it gently to prevent damage to the starter.
1.
2.
3. 6.
07/10/25 16:02:52 32Z6E600_005 
						

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ENGLISH
SERVICING YOUR ENGINE
THE IMPORTANCE OF MAINTENANCESAFETY PRECAUTIONS
Carbon monoxide poisoning from engine exhaust.
Burns from hot parts.
Injury from moving parts.
MAINTENANCE SCHEDULE
MAINTENANCE SAFETY 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.
6Make sure the engine is off before you begin any maintenance
or repairs. This will eliminate several potential hazards:
Be sure there is adequate ventilation whenever you operate
the engine.
Let the engine and exhaust system cool before touching.
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 Honda
Genuine parts or their equivalents for repair and replacement.
Some of the most important safety precautions follow. However,
we cannot warn you ofevery 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. 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. 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.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. Good maintenance is essential for safe, economical and trouble-
free operation. It will also help reduce pollution.
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. Service more frequently when used in dusty areas. Refer to the Shop Manual. Replace the paper air filter element only.
For commercial use, log hours of operation to determine
proper maintenance intervals.
Failure to follow this maintenance schedule could result in non-
warrantable failures. (1)
(2)
(3)
ITEMPerform at every
indicated month or
operating hour interval,
whichever comes first. REGULAR SERVICE PERIOD (3) Each
useFirst
month
or
20 HrsEvery 3
months
or
50 Hrs
(1)Every
year
or
300 Hrs
Every
200 Hrs.
(2)
(2)
(2) Every 6
months
or
100 Hrs
After every 500 Hrs. (2)
Every year (2)
Every 2 years (Replace if necessary) (2)Refer
to
page
7
8
8
9
9
10
10
9 Check level
Change
Replace
Check
Clean
Replace
Check-adjust
Replace
Clean
Check-adjust
Check-adjust
Clean
Check
Replace
Clean
Check Engine oil
Engine oil filter
Air cleaner
Spark plugs
Spark arrester
(applicable types)
Idle speed
Valve clearance
Combustion
chamber
Fuel filter
Fuel tank
Fuel tube
08/03/18 15:48:13 32Z6E600_006 
						

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REFUELING
Recommended FuelENGINE OIL
Recommended Oil
Oil Level Check
AMBIENT TEMPERATURE
OIL FILLER CAP/
DIPSTICK OIL FILLER CAP/DIPSTICK
UPPER LIMIT
LOWER LIMIT
7 Unleaded gasoline
Pump octane rating 86 or higher
Research octane rating 91 or higher
Pump octane rating 86 or higher U.S.
Except U.S.Oil is a major factor affecting performance and service life. Use
4-stroke automotive detergent oil.
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 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.
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. Reinstall the oil filler cap/dipstick. If the oil level is near or below the lower limit mark on the
dipstick, fill with the recommended oil to the upper limit mark. Insert and remove the oil filler cap/dipstick without screwing it
into the oil filler neck, then remove it to check the oil level shown
on the dipstick. Remove the oil filler cap/dipstick and wipe it clean. GXV670 ONLY: Start the engine and let it idle for 1 or 2 minutes.
Stop the engine and wait for 2 or 3 minutes. Check the engine oil level with the engine stopped and in a level
position. 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.
Spilled fuel is not only a fire hazard, it causes environmental
damage. Wipe up spills immediately. Keep gasoline away from appliance pilot lights, barbecues,
electric appliances, power tools, etc. Refuel carefully to avoid spilling fuel. It may be necessary to lower
the fuel level depending on operating conditions. After refueling,
tighten the fuel tank cap securely.Refer to the instructions provided with the equipment powered
by this engine for refuelling. 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. Never use stale or contaminated gasoline or an oil/gasoline
mixture. Avoid getting dirt or water in the fuel tank.
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. Wipe up spills immediately. Refuel only outdoors.
Stop engine and keep heat, sparks, and flame away. Gasoline is highly flammable and explosive, and you
can be burned or seriously injured when refueling. If your equipment will be used on an infrequent or intermittent
basis, please refer to the fuel section of the HELPFUL TIPS &
SUGGESTIONS chapter (see page ) for additional information
regarding fuel deterioration.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).
1.1.
2.
3.
4.
5. 11
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Oil Change OIL FILTER
Change
UPPER
LIMIT
LOWER
LIMITOIL FILTER SOCKET
OIL DRAIN BOLT OIL FILLER CAP/DIPSTICKOIL FILTER
FILTER MOUNTING BASE
SEAL SEALING WASHER
8Drain the engine oil, and retighten the drain bolt securely.
Use only a Honda Genuine oil filter or a filter of equivalent
quality specified for your model. Using the wrong filter, or a
non-Honda filter which is not of equivalent quality, may cause
engine damage.
Clean the filter mounting base, and coat the seal of the new oil
filter with clean engine oil. 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. Drain the used oil when the engine is warm. Warm oil drains
quickly and completely.
Use an oil filter socket, rather than a strap wrench, to avoid
striking and damaging the oil filter.
Remove the oil filter with an oil filter wrench and drain the
remaining oil into a suitable container. Dispose the used oil and
filter in a manner compatible with the environment.
Screw on the new oil filter by hand until the seal contacts the
filter mounting base, then use an oil filter wrench to tighten the
filter an additional 7/8 turn.
Oil filter tightening torque: 22 N·m (2.2 kgf·m , 16 lbf·ft) Place a suitable container below the engine to catch the used oil,
then remove the oil filler cap/dipstick, drain bolt and washer.
Allow the used oil to drain completely, then reinstall the drain
bolt and new washer, and tighten the drain bolt securely.
Oil filter tightening torque: 12 N·m (1.2 kgf·m , 9 lbf·ft)
Refill the crankcase with the specified amount of the
recommended oil (see page ). Reinstall the oil filler cap/
dipstick.
Start the engine, and check for leaks.
Stop the engine, and check the oil level as described on page .
If necessary, add oil to bring the oil level to the upper limit mark
on the dipstick.
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.
Reinstall the oil filler cap/dipstick securely. With the engine in a level position, fill with the recommended oil
to the upper limit mark on the dipstick. 1.
2.
3.
4.1.
2.
3.
4.
5.
6.
7.7
7 GXV610 QYC4, QYF4 type and GXV620 QYC4 type
08/03/18 15:49:05 32Z6E600_008 
						

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AIR CLEANER
Inspection
CleaningFUEL FILTER
Inspection
AIR CLEANER COVER FOAM FILTER ELEMENTPAPER FILTER ELEMENTFUEL FILTER
SPRING TABS
SPRING TABS AIR CLEANER BASE
CHAMBER
9 Foam air filter element: Clean in warm soapy water, rinse, and
allow to dry thoroughly. Or clean in non-flammable solvent and
allow to dry. Do not put oil on the foam element. 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.
Remove the air cleaner cover and inspect the filter elements.
Clean or replace dirty filter elements. Always replace damaged
filter elements.
Release the four spring tabs from the air cleaner cover, and
remove the cover.
Remove the foam filter element.
Remove the paper filter element.
Inspect both air filter elements, and replace them if they are
damaged. Always replace the paper air filter element at the
scheduled interval (see page ).
Clean the air filter elements if they are to be reused.
Paper filter element: Tap the filter element several times on a
hard surface to remove dirt, or blow compressed air [not
exceeding 207 kPa (2.1 kgf/cm
, 30 psi)] through the filter
element from the clean side that faces the engine. Never try to
brush off dirt; brushing will force dirt into the fibers. Replace the
paper filter element if it is excessively dirty.
Place the foam air filter element in the air cleaner cover, then
reinstall the paper air filter element and cover to the air cleaner
base. Hook the four spring tabs securely.Check the fuel filter for water accumulation or sediment.
If the fuel filter is found with excessive water accumulation or
sediment, take the engine to your authorized Honda servicing
dealer.
Wipe dirt from the inside of the air cleaner base and cover, using
a moist rag. Be careful to prevent dirt from entering the chamber
that leads on the carburetor. 1.
2.
3.
4.
5.
6.
7.1.
2.
6
07/06/01 18:22:23 32Z6E600_009 
						

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SPARK PLUG
Recommended Spark Plugs:SPARK ARRESTER (applicable types)
Cleaning & Inspection
MUFFLER
SPARK ARRESTER
MUFFLER
PROTECTOR6 mm FLANGE BOLT SPECIAL
SCREWS
SPECIAL SCREWS 6 mm FLANGE
BOLTS
SPARK ARRESTER
SCREEN SPARK PLUG CAP
SPARK PLUG WRENCH
0.7 0.8 mm
(0.028 0.031 in)
SEALING
WASHER
10 The recommended spark plugs have the correct heat range for
normal engine operating temperatures.
Incorrect spark plugs can cause engine damage.
For good performance, the spark plugs must be properly gapped
and free of deposits.ZGR5A (NGK)
J16CR-U (DENSO)
Inspect the spark plugs. Replace
them if damaged, badly fouled,
if the sealing washer is in poor
condition, or if the electrode is
worn.
Measure the spark plug
electrode gaps with a wire-type
feeler gauge. Correct the gap, if
necessary, by carefully bending
thesideelectrode.
Install the spark plugs carefully,
by hand, to avoid cross-
threading.
When installing a new spark plug, tighten 1/2 turn after the spark
plug seats to compress the washer.
When reinstalling the original spark plug, tighten 1/8 1/4 turn
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 caps to the spark plugs.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.
Remove the 6 mm flange bolts from the muffler protector, and
remove the muffler protector.
Remove the special screws from the spark arrester and remove
the spark arrester from the muffler.
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.
Install the spark arrester and muffler protector in the reverse
order of disassembly. Your engine is not factory-equipped with a spark arrester. The
spark arrester is optional part. 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.
Disconnect the spark plug caps, and remove any dirt from
around the spark plug area.
Remove the spark plugs with a 13/16-inch spark plug wrench.
After the spark plug is seated, tighten with a 13/16-inch spark
plug wrench to compress the sealing washer. 0.7 0.8 mm (0.028 0.031 in) 4.
3.
The gap should be:
5.
6.1.
2.
3.
4. 1.
2.
7.
07/10/25 16:04:35 32Z6E600_010