Honda Power Equipment GXV660, GXV690, GXV630 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

GXV630 · GXV660 · GXV690

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.

2009 Honda Motor Co., Ltd. All Rights Reserved

37Z6M600
00X37-Z6M-6000

−

GXV630R·GXV660R·GXV690R

CONTENTS

.......................INTRODUCTION .1

COMPONENT & CONTROL

................................LOCATION .3

................................FEATURES .3

BEFORE OPERATION

....................................CHECKS .4

..............................OPERATION .4

SAFE OPERATING

THE IMPORTANCE OF

MAINTENANCE

............................SCHEDULE .6

...........................REFUELING .7

...........................ENGINE OIL .7

.........................Oil Change .8

.............................OIL FILTER .8

........................AIR CLEANER .9

..........................Inspection .9

............................Cleaning .9

ENGLISH

................SAFETY MESSAGES .1

..........SAFETY INFORMATION .2

.....SAFETY LABEL LOCATION .2

.....................PRECAUTIONS .4

......STARTING THE ENGINE .4

......STOPPING THE ENGINE .5

.....SETTING ENGINE SPEED .5

.....SERVICING YOUR ENGINE .6

....................MAINTENANCE .6

......MAINTENANCE SAFETY .6

.......SAFETY PRECAUTIONS .6

............Recommended Oil .7

..................Oil Level Check .7

......................SPARK PLUG .10

HELPFUL TIPS &

......................SUGGESTIONS .10

...STORING YOUR ENGINE .10

................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
WARRANTY AND
DISTRIBUTOR/DEALER

.LOCATOR INFORMATION .18
CUSTOMER SERVICE

...................INFORMATION .18

1

SAFETY INFORMATION SAFETY LABEL LOCATION

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.

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
servicing dealer for replacement.

WARNING LABEL

For EU Except EUWARNING LABEL

attached to
product

supplied
with product

supplied
with product

supplied
with product

attached to
product

supplied
with product

Gasoline is highly flammable and explosive.
Stop the engine 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.

2

ENGLISH

FEATURESCOMPONENT & CONTROL LOCATION

FUEL FILTER

SCREEN GRID COVER

OIL PRESSURE SWITCH

OIL FILTER

SPARK PLUG

OIL FILLER CAP/
DIPSTICK

OIL DRAIN BOLT

Fuel-cut Solenoid

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 fuel­cut solenoid, allowing the engine to run. If the battery is
disconnected, fuel flow to the carburetor will stop.

ELECTRIC STARTER

SPARK PLUG

AIR CLEANER

ENGLISH

3

OPERATIONBEFORE OPERATION CHECKS

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 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.

2.

Remove any excessive dirt or debris, especially around the
muffler.

3.

Remove any objects or debris that may block the cooling air
intake at the screen grid cover. Running the engine with a
blocked air intake can cause engine damage.

SAFE OPERATING PRECAUTIONS

Before operating the engine for the first time, please review the

SAFETY INFORMATION
OPERATION CHECKS

on page .

section on page and the

4

2

BEFORE

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.

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.

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.

Do not operate the engine on slopes greater than 20°.

STARTING THE ENGINE

1.

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.

2.

To start a cold engine, move the choke lever to the CLOSED
position.

4.

Look for signs of damage.

5.

Check that all shields and covers are in place, and all nuts, bolts,
and screws are tightened.

Check the Engine

Check the fuel level. Starting with a full tank will help to

1.
eliminate or reduce operating interruptions for refueling.

Check the engine oil level (see page ). Running the engine

2.

7

with a low oil level can cause engine damage.

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.

To restart a warm engine, leave the choke lever in the OPEN
position.

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.

CHOKE LEVER

CLOSED

OOPPEENN

4

ENGLISH

Move the throttle lever away from the SLOW position, about 1/3

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.

THROTTLE LEVER

SSLLOOWW

FAST

4.

Turn the engine switch to the ON position.

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. Refer to the instructions provided by the equipment
manufacturer.

1.

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.

THROTTLE LEVER

5.

Operate the starter.

Turn the engine switch to the START position, and hold it there
until the engine starts.

If the engine fails to start within 5 seconds, release the engine
switch, and wait at least 10 seconds before operating the starter
again.

Using the electric starter for more than 5 seconds at a time will
overheat the starter motor and can damage it.

When the engine starts, release the engine switch, allowing it to
return to the ON position.

Warm up the engine for 2 or 3 minutes.

6.

7.

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.

CHOKE LEVER

SSLLOOWW

Turn the engine switch to the OFF position.

2.

If the fuel tank is equipped with a valve, turn the fuel valve to the

3.
CLOSED or OFF position.

SETTING ENGINE SPEED

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.

THROTTLE LEVER

CCLLOOSSEEDD

OOPPEENN

SSLLOOWW

FFAASSTT

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.

ENGLISH

5

SERVICING YOUR ENGINE

SAFETY PRECAUTIONS

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 Honda 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.

Make sure the engine is off before you begin any maintenance
or repairs. To prevent accidental startup, disconnect the spark
plug cap. 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 Honda
Genuine parts or their equivalents for repair and replacement.

MAINTENANCE SCHEDULE

REGULAR SERVICE PERIOD (3)

Perform at every

indicated month or

operating hour interval,

whichever comes first.

ITEM

Engine oil

Engine oil filter

Air cleaner

Spark plug

Idle speed

Valve clearance

Combustion

chamber

Fuel filter

Fuel tube

Replace the paper filter element only.

＊

Refer to the Shop Manual.

＊＊

Check level

Change

Replace

Check

Clean

Replace

Check-adjust

Replace

Check-adjust

Check-adjust

Clean

Replace

Check

Each

use

Every 2 years (Replace if necessary) (2)

Every 6

Months

or

100 Hrs

(1)

Every

Year

or

300 Hrs

(2)

(2)

(2)

First

Month

or

20 Hrs

Every 200 Hrs.

After every 1000 Hrs. (2)

Every 2

years

or

500 Hrs

＊

Refer

to

page

7

8

8

9

9

10

＊＊

＊＊

＊＊

＊＊

＊＊

(1)

Service more frequently when used in dusty areas.

(2)

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.

For commercial use, log hours of operation to determine

(3)

proper maintenance intervals.

Failure to follow this maintenance schedule could result in non­warrantable failures.

6

ENGLISH

REFUELING

ENGINE OIL

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 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 the Warranty.

If your equipment will be used on an infrequent or intermittent
basis, please refer to the fuel section of the STORING YOUR
ENGINE chapter (see page ) for additional information

11

regarding fuel deterioration.

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).

Synthetic 5W-30

AMBIENT TEMPERATURE

SAE 10W-30 or 5W-30 is recommended for general use. Use a full
synthetic 5W-30 for starting/operating temperatures between 5°F
( 15°C) and 13°F ( 25°C). Other viscosities shown in the chart

−−−

may be used when the average temperature in your area is within
the indicated range.

Oil Level Check

Gasoline is highly flammable and explosive, and you
can be burned or seriously injured when refueling.

Stop the 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.

Never use stale or contaminated gasoline or an oil/gasoline
mixture. Avoid getting dirt or water in the fuel tank.

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.
Refer to the instructions provided with the equipment powered by
this engine for refuelling.

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. It may be necessary to lower the fuel level depending
on operating conditions. After refueling, tighten the fuel tank cap
securely.

Check the engine oil level with the engine stopped and in a level
position.

1.

Start the engine and let it idle for 1 or 2 minutes. Stop the engine
and wait for 2 or 3 minutes.

2.

Remove the oil filler cap/dipstick and wipe it clean.

3.

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.

4.

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.

5.

Reinstall the oil filler cap/dipstick.

OIL FILLER CAP/
DIPSTICK

UPPER LIMIT

LOWER LIMIT

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.

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.

ENGLISH

7

Oil Change OIL FILTER

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, drain bolt and sealing
washer.

2.

Allow the used oil to drain completely, then reinstall the drain
bolt and new sealing washer, and tighten the drain bolt 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.

3.

With the engine in a level position, fill with the recommended oil
to the upper limit mark on the dipstick.

OIL FILLER CAP/
DIPSTICK

UPPER LIMIT

Change

1.

Drain the engine oil, and retighten the drain bolt securely.

2.

Remove the oil filter with an oil filter socket tool and drain the
remaining oil into a suitable container. Dispose the used oil and
filter in a manner compatible with the environment.

Use an oil filter socket, rather than a strap wrench, to avoid
striking and damaging the oil filter.

SEAL

OIL FILTER

OIL FILTER SOCKET

FILTER MOUNTING BASE

LOWER LIMIT

OIL DRAIN BOLT

SEALING WASHER

Running the engine with a low oil level can cause engine
damage. This type of damage is not covered by the

Limited Warranty.

4.

Reinstall the oil filler cap/dipstick securely.

Distributor’s

Clean the filter mounting base, and coat the seal of the new oil

3.
filter with clean engine oil.

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.

4.

Screw on the new oil filter by hand until the seal contacts the
filter mounting base, then use an oil filter socket tool to tighten
the filter an additional 3/4 turn.

Oil filter tightening torque: 12 N·m (1.2 kgf·m , 9 lbf·ft)

5.

Refill the crankcase with the specified amount of the
recommended oil (see page ). Reinstall the oil filler cap/

7

dipstick.

Start the engine, and check for leaks.

6.

Stop the engine, and check the oil level as described on page .

7. 7
If necessary, add oil to bring the oil level to the upper limit mark
on the dipstick.

8

ENGLISH

AIR CLEANER

5.

Clean the filter elements if they are to be reused.

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 (see page ).

6

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 elements.
Clean or replace dirty filter elements. Always replace damaged
filter elements.

Cleaning

Pull the air cleaner cover latch to the unlocked position, and

1.
remove the cover.

Release the two spring tabs from the element holder, then

2.
remove the element holder and remove the foam filter element
from the element holder.

Remove the paper filter element.

3.

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.

Foam filter element: Clean 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 excess oil. The engine will smoke when started if
too much oil is left in the foam.

AIR CHAMBER

AIR CLEANER CASE

AIR CLEANER COVER

SPRING TABS

PAPER FILTER ELEMENT

ELEMENT HOLDER

FOAM FILTER ELEMENT

AIR CLEANER COVER LATCH

Inspect both filter elements, and replace them if they are

4.
damaged. Always replace the paper filter element at the
scheduled interval (see page ).

6

Dry

Soak Squeeze Oil Squeeze

6.

Wipe dirt from the inside of the air cleaner body and cover,
using a moist rag. Be careful to prevent dirt from entering the air
chamber that leads on the carburetor.

7.

Reinstall the paper filter element.

8.

Put the foam filter element on the element holder, and reinstall
the element holder on the air cleaner case. Hook the two spring
tabs securely.

Lock the air cleaner cover latch securely.

9.

ENGLISH

9

SPARK PLUG

HELPFUL TIPS & SUGGESTIONS

Recommended Spark Plug:

ZFR5F (NGK)

The recommended spark plug has the correct heat range for
normal engine operating temperatures.

Incorrect spark plugs can cause engine damage.

If the engine has been running, let it cool before servicing the
spark plugs.

For good performance, the spark plugs must be properly gapped
and free of deposits.

Disconnect the spark plug caps, and remove any dirt from

1.
around the spark plug area.

Remove the spark plugs with a 5/8-inch spark plug wrench.

2.

SPARK PLUG CAP

SPARK PLUG WRENCH

3.

Inspect the spark plugs. Replace
them if damaged, badly fouled,

SIDE ELECTRODE

if the sealing washer is in poor
condition, or if the electrode is
worn.

4.

Measure the spark plug

0.7 0.8 mm

−

(0.028 0.031 in)

−

electrode gaps with a wire-type
feeler gauge. Correct the gap, if
necessary, by carefully bending
thesideelectrode.
The gap should be:

0.7 0.8 mm (0.028 0.031 in)

−−

5.

Install the spark plugs carefully,

SEALING
WASHER

by hand, to avoid cross­threading.

6.

After the spark plug is seated, tighten with a 5/8-inch spark plug
wrench to compress the sealing washer.

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

Depending on the region where you operate your equipment, fuel
formulations may deteriorate and oxidize rapidly. Fuel
deterioration and oxidation can occur in as little as 30 days and
may cause damage to the carburetor and/or fuel system. Please
check with your servicing dealer for local storage
recommendations.

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.

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.

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.

7.

Attach the spark plug caps to the spark plugs.

10

ENGLISH

Adding a Gasoline Stabilizer to Extend Fuel Storage Life Draining the Fuel Tank and Carburetor

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.

Gasoline is highly flammable and explosive, and you
can be burned or seriously injured when handling
fuel.

1.

Add gasoline stabilizer following the manufacturer’s instructions.

Stop the engine and keep heat, sparks, and flame

After adding a gasoline stabilizer, run the engine outdoors for 10

2.
minutes to be sure that treated gasoline has replaced the
untreated gasoline in the carburetor.

Stop the engine, and if the fuel tank is equipped with a fuel valve,

3.
move the fuel valve to the CLOSED or OFF position.

away.
Handle fuel only outdoors.
Wipe up spills immediately.

Disconnect the fuel line to the engine, and drain the fuel tank

1.
into an approved gasoline container. If the fuel tank is equipped
with a valve, turn the fuel valve to the OPEN or ON position to
enable draining. After draining is completed, reconnect the fuel
line.

Loosen the carburetor drain screw, and drain the carburetor into

2.
an approved gasoline container. After draining is completed,
tighten the carburetor drain screw.

CARBURETOR

DRAIN SCREW

Engine Oil

Change the engine oil (see page ).

1.

Remove the spark plugs (see page ).

2.

Pour 5 10 cm

3.

−−−

(5 10 cc, 1 2 teaspoons) of clean engine oil

8

10

into each cylinder.

Turn the engine for a few seconds by turning the engine switch

4.
to the START position to distribute the oil in the cylinders.

Reinstall the spark plugs.

5.

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.

Unless all fuel has been drained from the fuel tank, leave the fuel
valve in the CLOSED or OFF position to reduce the possibility of
fuel 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.

Remove the battery and store it in a cool, dry place. Recharge the
battery once a month while the engine is in storage. This will help
to extend the service life of the battery.

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 cylinders were coated with oil during storage preparation,
the engine may 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. If the fuel tank is equipped with a fuel valve, move
the fuel valve lever to the CLOSED or OFF position.

section of this manual (see page ).

BEFORE OPERATION

4

TAKING CARE OF UNEXPECTED PROBLEMS

ENGINE WILL
NOT START

1.

Electric
starting:
Check battery
and fuse.

2.

Check control
positions.

3.

Check fuel.

4.

Remove and
inspect spark
plugs.

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

Battery
discharged.

Fuse burnt out.
Fuel valve
CLOSED or OFF
(If equipped).
Choke OPEN.

Engine switch
OFF.
Out of fuel.
Stale fuel;
engine stored
without treating
or draining
gasoline, or
refueled with
stale gasoline.
Spark plugs
faulty, fouled, or
improperly
gapped.
Spark plugs wet
with fuel
(flooded engine).

Fuel filter
restricted,
carburetor
malfunction,
ignition
malfunction,
valves stuck, etc.

Filter element(s)
restricted.

Stale fuel;
engine stored
without treating
or draining
gasoline, or
refueled with
stale gasoline.
Fuel filter
restricted,
carburetor
malfunction,
ignition
malfunction,
valves stuck, etc.

Recharge battery.

Replace fuse.
Move lever to
OPEN or ON
position.
Move lever to
CLOSED position
unless the engine
is warm.
Turn engine switch
to ON position.
Refuel (p. 7).
Drain fuel tank and
carburetor (p. 11).
Refuel with fresh
gasoline (p. 7).

Gap, or replace
spark plugs (p. 10).

Dry and reinstall
spark plugs (p. 10).
Start engine with
throttle lever in
FAST position
(p. 5).
Replace or repair
faulty components
as necessary.

CorrectionPossible Cause

Clean or replace
filter element(s)
(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

Battery Connections for Electric Starter

Serial Number Location Recommended Battery

GXV630

Record the engine serial number, type and purchase date in the
spaces below. You will need this information when ordering parts

GXV660
GXV690

12 V 36 Ah

and when making technical or warranty inquiries.

Be careful not to connect the battery in reverse polarity, as this will
short circuit the battery charging system. Always connect the
positive ( ) battery cable to the battery terminal before

＋

connecting the negative ( ) battery cable, so your tools cannot
cause a short circuit if they touch a grounded part while tightening
the positive ( ) battery cable end.

＋

A battery can explode if you do not follow the correct
procedure, seriously injuring anyone nearby.

−

−

ENGINE SERIAL NUMBER &
ENGINE TYPE LOCATION

Engine serial number: __ __ __ __ __ __ __ __ __ __ __

−

Engine type: ___ ___ ___ ___

Date Purchased: ______ / ______ / ______

Keep all sparks, open flames, and smoking materials
away from the battery.

WARNING:

contain lead and lead compounds.

1.

Connect the battery positive ( ) cable to the starter solenoid

Battery posts, terminals, and related accessories

Wash hands after handling.

＋

terminal as shown.

2.

Connect the battery negative ( ) cable to an engine mounting

−

bolt, frame bolt, or other good engine ground connection.

3.

Connect the battery positive ( ) cable to the battery positive ( )

＋＋

terminal as shown.

4.

Connect the battery negative ( ) cable to the battery negative

−

( ) terminal as shown.

5.

Coat the terminals and cable ends with grease.

−

STARTER SOLENOID

ENGLISH

POSITIVE ( )
BATTERY CABLE

＋

NEGATIVE ( )
BATTERY CABLE

−

13

Remote Control Linkage

The throttle and choke control levers are provided with holes for
optional cable attachment. The following illustrations show
installation examples for a solid wire cable and for a flexible,
braided wire cable.

LEFT SIDE CONTROL

THROTTLE CONTROL
LEVER

THROTTLE CABLE

46mm

×

GOVERNOR
SPRING

WIRE HOLDER

For Throttle Cable

5mm
CIRCLIP

THROTTLE CABLE

For Choke Cable

5mm
CIRCLIP

THROTTLE CONTROL LEVER

46mm

×

WIRE HOLDER
(for throttle cable)

CHOKE CONTROL LEVER

CABLE HOLDER (2)

516mm(2)

×

CABLE

RIGHT SIDE CONTROL

THROTTLE
CONTROL
LEVER

CHOKE CABLE

GOVERNOR SPRING

CHOKE CONTROL LEVER

THROTTLE CABLE

CHOKE CONTROL
LEVER

CHOKE CABLE

46mm

×

WIRE HOLDER
(for choke cable)

CHOKE CABLE

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.

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.

46mm

×

14

WIRE HOLDER

CABLE

CABLE HOLDER (2)

516mm(2)

×

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.

ENGLISH

Emission Control System Information

Replacement Parts

The emission control systems on your Honda engine were

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.

designed, built, and certified to conform with EPA, California
(models certified for sale in California), and Canadian emission
regulations. We recommend the use of Honda Genuine 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

Honda utilizes appropriate air/fuel ratios and other emissions

system.
control 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.

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

The U.S., California Clean Air Act, and Environment Canada

emission regulations.
EPA, California, and Canadian regulations require all
manufacturers to furnish written instructions describing the
operation and maintenance of emission control systems. 6

Maintenance

Follow the maintenance schedule on page . Remember that this

schedule is based on the assumption that your machine will be
The following instructions and procedures must be followed in
order to keep the emissions from your Honda engine within the
emission standards.

used for its designed purpose. Sustained high-load or high-

temperature operation, or use in unusually wet or dusty conditions,

will require more frequent service.

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.

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

15

(Models certified for sale in California)

An Air Index Information 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

50 hours (0 80 cc, inclusive)

−

125 hours (greater than 80 cc)

Intermediate

125 hours (0 80 cc, inclusive)

−

250 hours (greater than 80 cc)

Extended

300 hours (0 80 cc, inclusive)

−

500 hours (greater than 80 cc)

1,000 hours (225 cc and greater)

SpecificationsAir Index

GXV630 (QAF-Type)

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 )

Engine oil capacity

Cooling system
Ignition system
PTO shaft rotation

GXV660 (TAF-Type)

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 )

Engine oil capacity

Cooling system
Ignition system
PTO shaft rotation

××

443 420 446 mm

××

(17.416.517.6in)

45.7 kg (100.8 lbs)

4-stroke, overhead valve, 2 cylinders (90° V-Twin)

688.0 cm

××

[78.0 72.0 mm (3.07 2.83 in)]

(41.97 cu-in)

15.5 kW (21.1 PS, 20.8 bhp)

＊

at 3,600 rpm

48.3 N·m (4.93 kgf·m, 35.6 lbf·ft) at

＊

2,500 rpm

Without oil filter replacement:

1.7L(1.8USqt,1.5lmpqt)

With oil filter replacement:

1.9L(2.0USqt,1.7lmpqt)
Forced air

CDI type magneto ignition

Counterclockwise

××

443 420 463 mm

××

(17.416.518.2in)

45.9 kg (101.2 lbs)

4-stroke, overhead valve, 2 cylinders (90° V-Twin)

688.0 cm

××

[78.0 72.0 mm (3.07 2.83 in)]

(41.97 cu-in)

16.0 kW (21.8 PS, 21.5 bhp)

＊

at 3,600 rpm

48.3 N·m (4.93 kgf·m, 35.6 lbf·ft) at

＊

2,500 rpm

Without oil filter replacement:

1.7L(1.8USqt,1.5lmpqt)

With oil filter replacement:

1.9L(2.0USqt,1.7lmpqt)
Forced air

CDI type magneto ignition

Counterclockwise

GXV690 (TAF-Type)

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 )

Engine oil capacity

4-stroke, overhead valve, 2 cylinders (90° V-Twin)

[78.0 72.0 mm (3.07 2.83 in)]

＊

48.3 N·m (4.93 kgf·m, 35.6 lbf·ft) at

＊

Without oil filter replacement:

××

443 420 463 mm

××

(17.416.518.2in)

45.9 kg (101.2 lbs)

688.0 cm

(41.97 cu-in)

××

16.5 kW (22.4 PS, 22.1 bhp)

at 3,600 rpm

2,500 rpm

1.7L(1.8USqt,1.5lmpqt)

With oil filter replacement:

1.9L(2.0USqt,1.7lmpqt)

Cooling system
Ignition system

CDI type magneto ignition

PTO shaft rotation

The power rating of the engine indicated in this document is the

＊

Forced air

Counterclockwise

net power output tested on a production engine for the engine
model and measured in accordance with SAE J1349 at 3,600
rpm (Net Power) and at 2,500 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.

16

ENGLISH

Tuneup Specifications

GXV630/660/690

ITEM

Spark plug gap

(0.028 0.031 in)
Idle speed
Valve clearance
(cold)

1,400 150 rpm

IN: 0.08 0.02 mm

EX: 0.10 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
Maintenance

ZFR5F (NGK)
Before each use:

Check engine oil level. Refer to page 7.

Check air filter. Refer to page 9.

First 20 hours:

Change engine oil. Refer to page 8.

Subsequent:

Refer to the maintenance schedule on page 6.

MAINTENANCESPECIFICATION

−

0.7 0.8 mm

Refer to page 10.

−

±

±

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

Wiring Diagrams

2.7 A Charge Coil Type

IG E STBAT LO

OFF

ON

START

Black

Br

Yellow

Y

Blue

Bu

Green

G

Red

R

White

W

MAIN FUSE

(A)

ENGINE SWITCH

(B)

ENGINE GROUND

(C)

FUEL CUT

(D)

SOLENOID
STARTER MOTOR

(E)

BATTERY

(F)

CHARGE COIL

(G)

LEFT IGNITION

(H)

COIL
LEFT SPARK PLUG

(I)

RIGHT IGNITION

(J)

COIL
RIGHT SPARK PLUG

(K)

(L) REGULATOR

RECTIFIER

O
Lb
Lg

P
Gr

BrownBl
Orange
Light blue
Light green
Pink
Gray

17 A Charge Coil Type

ENGLISH

17

CONSUMER INFORMATION

WARRANTY AND DISTRIBUTOR/DEALER LOCATOR
INFORMATION

United States, Puerto Rico, and U.S. Virgin Islands:

Visit our website: www.honda-engines.com

Canada:

Call (888) 9HONDA9
or visit our website: www.honda.ca

For European Area:

Visit our website: http://www.honda-engines-eu.com

Australia:

Call [phone]
or visit our website: www.hondampe.com.au

CUSTOMER SERVICE INFORMATION

Servicing dealership personnel are trained professionals. They
should be able to answer any question you may have. If you
encounter a problem that your dealer does not solve to your
satisfaction, please discuss it with the dealership’s management.
The Service Manager, General Manager, or Owner can help.
Almost all problems are solved in this way.

United States, Puerto Rico, and U.S. Virgin Islands:

If you are dissatisfied with the decision made by the dealership’s
management, contact the Honda Regional Engine Distributor for
your area.

If you are still dissatisfied after speaking with the Regional Engine
Distributor, you may contact the Honda Office as shown.

United States, Puerto Rico, and U.S. Virgin Islands:

American Honda Motor Co., Inc.

Power Equipment Division
Customer Relations Office
4900 Marconi Drive
Alpharetta, GA 30005-8847

Or telephone: [phone], 8:30 am - 7:00 pm ET

Canada:

Honda Canada, Inc.

Please visit www.honda.ca
for address information

Telephone: (888) 9HONDA9

[phone]
[phone]

Australia:

Honda Australia Motorcycle and Power Equipment Pty. Ltd.

1954 1956 Hume Highway

−

Campbellfield Victoria 3061

Telephone: [phone]

[phone]Facsimile:

For European Area:

Honda Europe NV.

European Engine Center

http://www.honda-engines-eu.com

All Other Areas:

Please contact the Honda distributor in your area for assistance.

Toll free

Toll freeFacsimile:

All Other Areas:

If you are dissatisfied with the decision made by the dealership’s
management, contact the Honda Office as shown.

《》

Honda’s Office

When you write or call, please provide this information:

Equipment manufacturer’s name and model number that the
engine is mounted on
Engine model, serial number, and type (see page )
Name of dealer who sold the engine to you
Name, address, and contact person of the dealer who services
your engine
Date of purchase
Your name, address and telephone number
A detailed description of the problem

13

18

ENGLISH