Honda GC190 Owner's 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.
OWNER’S MANUAL
GC190
All information in this publication is based on the latest product
information available at the time of printing. American Honda Motor
Co., Inc. 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.
SAFETY MESSAGES

WARNING:
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.
The engine exhaust from this product
contains chemicals known to the State
of California to cause cancer, birth
defects or other reproductive harm.
31Z1A000
00X31-Z1A-0000
EM3
These signal words mean:
POM53483
IPC 60,000.2003.01
PRINTED IN U.S.A.
CONTENTS
INTRODUCTION . . . . . . . . . . . . . . 1
SAFETY MESSAGES . . . . . . . . . 1
COMPONENT & CONTROL
LOCATION . . . . . . . . . . . . . . . . . . 2
IS YOUR ENGINE
READY TO GO . . . . . . . . . . . . . . . 2
OPERATION . . . . . . . . . . . . . . . . . 2
Safe Operating
Precautions . . . . . . . . . . . . . . . . 2
Type 1 Operation . . . . . . . . . . . 2
Type 2 Operation . . . . . . . . . . . . 3
Type 3 Operation . . . . . . . . . . . 4
Oil Alert® System . . . . . . . . . . . 4
SERVICING YOUR ENGINE . . . . . 4
The Importance of
Maintenance. . . . . . . . . . . . . . . . 4
Maintenance Safety . . . . . . . . . 4
Safety Precautions . . . . . . . . . . 4
Maintenance Schedule . . . . . . . 5
Refueling . . . . . . . . . . . . . . . . . . 5
Fuel Recommendations . . . . . . 5
ENGINE OIL . . . . . . . . . . . . . . . . 5
Recommended Oil. . . . . . . . . . . 5
Oil Level Check . . . . . . . . . . . . . 5
Oil Change . . . . . . . . . . . . . . . . . 5
AIR CLEANER . . . . . . . . . . . . . . 6
Inspection . . . . . . . . . . . . . . . . . 6
Cleaning . . . . . . . . . . . . . . . . . . . 6
Spark Plug . . . . . . . . . . . . . . . . . 6
Spark Arrester . . . . . . . . . . . . . 6
HELPFUL TIPS &
SUGGESTIONS. . . . . . . . . . . . . . . 7
Storing Your Engine . . . . . . . . . 7
Transporting . . . . . . . . . . . . . . . 8
TAKING CARE OF UNEXPECTED
PROBLEMS. . . . . . . . . . . . . . . . . . 8
TECHNICAL & CONSUMER
INFORMATION . . . . . . . . . . . . . . . 8
Serial Number Location and
Type Location . . . . . . . . . . . . . . 8
High Altitude Operation . . . . . . 8
Oxygenated Fuels . . . . . . . . . . 9
Emission Control System
Information. . . . . . . . . . . . . . . . . 9
Air Index . . . . . . . . . . . . . . . . . . 10
Specifications . . . . . . . . . . . . . 10
Tuneup Specifications . . . . . . 10
Quick Reference Information . 10
Wiring Diagram . . . . . . . . . . . . 10
CONSUMER INFORMATION . . . 11
Honda Publications. . . . . . . . . 11
Distributor’s Limited
Warranty. . . . . . . . . . . . . . . . . . 11
Emission Control System
Warranty. . . . . . . . . . . . . . . . . . 11
Distributor/Dealer Locator
Information. . . . . . . . . . . . . . . . 12
Customer Service
Information. . . . . . . . . . . . . . . . 12
© 2003 American Honda Motor Co., Inc.—All Rights Reserved
DANGER
You WILL be KILLED or SERIOUSLY
HURT if you don't follow instructions.
WARNING
You CAN be KILLED or SERIOUSLY
HURT if you don't follow instructions.
CAUTION
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:
NOTICE
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.
SAFETY 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.
• 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 3 feet (1 meter) away from buildings and other
equipment during operation. Keep flammable materials away, and
do not place anything on the engine while it is running.
1
COMPONENT & CONTROL LOCATION
BEFORE OPERATION CHECKS
IS YOUR ENGINE READY TO GO?
AIR
CLEANER
MUFFLER
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.
MUFFLER
DEFLECTOR
(optional)
 WARNING
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.
OIL FILLER CAP/
DIPSTICK
OIL DRAIN
BOLT
Always perform a preoperation inspection before each
operation, and correct any problem.
SPARK PLUG
Before beginning your preoperation checks, be sure the engine is level
and the throttle lever (ignition switch lever or engine stop switch) is in
the STOP position.
FUEL
FILLER
CAP
Always check the following items before you start the engine:
1. Fuel level (see page 5).
2. Oil level (see page 5).
STARTER
GRIP
The Oil Alert® system (applicable engine types) will automatically
stop the engine before the oil level falls below safe limits. However,
to avoid the inconvenience of an unexpected shutdown, always
check the engine oil level before startup.
FUEL
TANK
ENGINE CONTROL TYPES
3. Air cleaner (see page 6).
TYPE 1: MANUAL THROTTLE / MANUAL CHOKE
4. General inspection: Check for fluid leaks and loose or damaged
parts.
5. Check the equipment powered by this engine.
CHOKE ROD
Review the instructions provided with the equipment powered by
this engine for any precautions and procedures that should be
followed before engine startup.
THROTTLE
LEVER (gray)
Used on engines with
an adjustable throttle
lever.
OPERATION
SAFE OPERATING PRECAUTIONS
Before operating the engine for the first time, please review the
SAFETY INFORMATION section on page 1 and the BEFORE
OPERATION CHECKS above.
TYPE 2: FIXED THROTTLE / IGNITION SWITCH LEVER / MANUAL CHOKE
 WARNING
CHOKE ROD
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.
IGNITION SWITCH
LEVER (red)
Used on engines with a
non-adjustable throttle
lever.
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.
TYPE 3: FIXED THROTTLE / ENGINE STOP SWITCH / MANUAL CHOKE
TYPE 1: MANUAL THROTTLE / MANUAL CHOKE
Starting A Cold Engine
ENGINE
STOP
SWITCH
1. Pull the choke rod to the
CLOSED position.
CHOKE ROD
2
CHOKE ROD
2. Move the throttle lever (gray)
away from the SLOW
position, about 1/3 of the way
toward the FAST position.
TYPE 2: FIXED THROTTLE / IGNITION SWITCH LEVER /
MANUAL CHOKE
THROTTLE
LEVER (gray)
Starting A Cold Engine
Some engine applications
use a remotely-mounted
throttle control rather than the
engine-mounted throttle lever
shown here.
CHOKE ROD
1. Pull the choke rod to the
CLOSED position.
FAST
SLOW
3. Pull the starter grip lightly until
resistance is felt, then pull
briskly.
2. Move the ignition switch lever
(red) to the ON position.
NOTICE
Some engine applications use
a remotely-mounted ignition
switch rather than the enginemounted ignition switch lever
shown here.
Do not allow the starter grip to
snap back against the engine.
Return it gently to prevent
damage to the starter.
STARTER GRIP
4. If the choke rod was pulled to the CLOSED position to start the
engine, push it to the OPEN position as soon as the engine warms
up enough to run smoothly.
ON
3. Pull the starter grip lightly until
resistance is felt, then pull
briskly.
Throttle Setting
Position the throttle control lever
(gray) for the desired engine
speed. For best engine
performance, it is recommended
the engine be operated with the
throttle in the FAST (or high)
position.
IGNITION SWITCH
LEVER (red)
FAST
NOTICE
Do not allow the starter grip to
snap back against the engine.
Return it gently to prevent
damage to the starter.
SLOW
THROTTLE
LEVER (gray)
STARTER GRIP
Starting a Warm Engine
4. If the choke rod was pulled to the CLOSED position to start the
engine, push it to the OPEN position as soon as the engine warms
up enough to run smoothly.
If the engine has run out of fuel, pull the choke rod to the CLOSED
position after refueling. If the engine has not run out of fuel, leave the
choke rod in the OPEN position.
5. The engine speed is preset on this type.
1. Place the throttle lever in the FAST position.
Starting a Warm Engine
2. Pull the starter grip lightly until you feel resistance, then pull briskly.
If the engine has run out of fuel, pull the choke rod to the CLOSED
position after refueling. If the engine has not run out of fuel, leave the
choke rod in the OPEN position.
Stopping The Engine
1. Move the throttle lever (gray)
to the SLOW position.
2. Allow the engine to idle for a
few seconds, then move the
throttle lever to the STOP
position.
THROTTLE
LEVER (gray)
1. Pull the starter grip lightly until you feel resistance, then pull briskly.
2. If the choke was pulled to the CLOSED position to start, push it to
the OPEN position as soon as the engine starts.
FAST
Stopping The Engine
Move the ignition switch lever
(red) to the OFF position.
STOP
OFF
3
SERVICING YOUR ENGINE
TYPE 3: FIXED THROTTLE / ENGINE STOP SWITCH /
MANUAL CHOKE
THE IMPORTANCE OF MAINTENANCE
Starting A Cold Engine
1. Pull the choke rod to the
CLOSED position.
Good maintenance is essential for safe, economical and trouble-free
operation. It will also help reduce pollution.
CHOKE ROD
 WARNING
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.
2. Move the engine stop switch
to the ON position.
Some engine applications
use a remotely-mounted
ignition switch rather than the
engine-mounted engine stop
switch shown here.
OFF
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.
ON
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.
ENGINE
STOP
SWITCH
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.
3. Pull the starter grip lightly until
resistance is felt, then pull
briskly.
MAINTENANCE SAFETY
NOTICE
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.
Do not allow the starter grip to
snap back against the engine.
Return it gently to prevent
damage to the starter.
4. If the choke rod was pulled to
the CLOSED position to start
the engine, push it to the OPEN
position as soon as the engine
warms up enough to run
smoothly.
STARTER GRIP
 WARNING
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.
5. The engine speed is preset on this type.
Starting a Warm Engine
SAFETY PRECAUTIONS
If the engine has run out of fuel, pull the choke rod to the CLOSED
position after refueling. If the engine has not run out of fuel, leave the
choke rod in the OPEN position.
• 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.
1. Pull the starter grip lightly until you feel resistance, then pull briskly.
2. If the choke was pulled to the CLOSED position to start, push it to
the OPEN position as soon as the engine starts.
Stopping The Engine
Move the engine stop switch to the OFF position.
OIL ALERT® SYSTEM
The Oil Alert system is designed to prevent engine damage caused by
an insufficient amount of oil in the crankcase. Before the oil level in the
crankcase can fall below a safe limit, the Oil Alert system will
automatically stop the engine [the throttle lever (ignition switch lever)
will remain in a run position].
If the engine stops and will not restart, check the engine oil level
(page 5) before troubleshooting in other areas.
4
ENGINE OIL
MAINTENANCE SCHEDULE
REGULAR SERVICE
PERIOD (4)
ITEM
Perform at every indicated month or
operating hour interval, whichever comes
first.
Engine oil
Check
Before First Every 3 Every 6 Every Every
Two
Each Month Months Months Year
Years
or
or
or
or
Use
5 Hrs 25 Hrs 50 Hrs 100 Hrs or 250
Hrs
5
O
Check
O (2)
5
O
Clean
O (1)
Replace
Spark plug
Use 4-stroke motor oil that meets
or exceeds the requirements for
API service classification SH, SJ,
or equivalent. Always check the
API service label on the oil
container to be sure it includes the
letters SH, SJ, or equivalent.
Page
O
Change
Air filter
Recommended Oil
6
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.
6
Oil Level Check
O
Check-adjust
O
Replace
O
Spark arrester
Clean
Idle speed
Check-adjust
Fuel tank and filter
Clean
Fuel tube
Check
Valve clearance
Check-adjust
Combustion chamber
Clean
O
1. Check the oil with the engine stopped and level.
6
Shop
manual
Shop
manual
Shop
manual
Shop
manual
—
O(3)
O(3)
Every 2 years
(Replace if necessary) (3)
O(3)
After every 250 hours (3)
2. Remove the oil filler cap/dipstick and wipe it clean.
3. 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.
4. If the oil level is near or below the lower limit mark on the dipstick,
remove the oil filler cap/dipstick, and fill with the recommended oil
to the upper limit mark (bottom edge of the oil fill hole). Do not
overfill.
(1) Service more frequently when used in dusty areas.
(2) Change engine oil every 25 hours when used under heavy load or
in high ambient temperatures.
(3) These items should be serviced by an authorized Honda servicing
dealer, unless you have the proper tools and are mechanically
proficient. Refer to the Honda shop manual for service
procedures.
(4) For commercial use, log hours of operation to determine proper
maintenance intervals.
5. Reinstall the oil filler cap/dipstick.
OIL FILLER CAP/
DIPSTICK
REFUELING
OIL FILL HOLE
(bottom edge)
Use unleaded gasoline with a pump octane rating of 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.
LOWER LIMIT
Drain the engine oil when the engine is warm. Warm oil drains quickly
and completely.
Gasoline is highly flammable and explosive, and you can
be burned or seriously injured when refueling.
1. Place a suitable container
next to the engine to catch
the used oil
• Stop engine and keep heat, sparks, and flame away.
• Refuel only outdoors.
• Wipe up spills immediately.
2. Remove the oil filler cap/
dipstick and the oil drain
plug.
3. Allow the used oil to drain
completely, then reinstall
the drain plug and washer.
Tighten the drain plug
securely.
NOTICE
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 (see page 11).
OIL FILLER
CAP/
DIPSTICK
DRAIN
PLUG
WASHER
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 or pour it on the ground or
down a drain.
Never use stale or contaminated gasoline or oil/gasoline mixture.
Avoid getting dirt or water in the fuel tank.
2. Add fuel to the bottom
of the fuel level limit in
the neck of the fuel
tank. Do not overfill.
Wipe up spilled fuel
before starting the
engine.
UPPER LIMIT
Oil Change
 WARNING
1. Remove the fuel tank
cap.
AMBIENT TEMPERATURE
MAXIMUM
FUEL LEVEL
4. With the engine in a level position, fill to the upper limit mark
(bottom edge of the oil fill hole) on the dipstick with the
recommended oil (see page 5).
Engine Oil Capacity: 0.61 qt (0.58 )
FUEL
LEVEL
MARK
NOTICE
Running the engine with a low oil level can cause engine damage.
Fuel tank capacity: 0.53 gal (2.0 l)
5. Reinstall the oil filler cap/dipstick securely.
5
AIR CLEANER
5. Install the spark plug carefully, by hand, to avoid cross-threading.
A dirty air cleaner will restrict air flow to the carburetor and cause poor
engine performance. Inspect the filter each time the engine is
operated. You will need to clean the filter more frequently if you
operate the engine in very dusty areas.
6. After the spark plug is seated, tighten with the proper size spark
plug wrench to compress the washer.
7. When installing a new spark plug, tighten 1/2 turn after the spark
plug seats to compress the washer.
8. When reinstalling the original spark plug, tighten 1/8 - 1/4 turn after
the spark plug seats to compress the washer.
NOTICE
Operating the engine without an air filter, or with a damaged filter, will
allow dirt to enter the engine, causing rapid engine wear. This type of
damage is not covered under the Distributor’s Limited Warranty (see
page 11).
Inspection
1. Press the latch
tabs on the top of
the air cleaner
cover, and remove
the cover. Check
the filter to be sure
it is clean and in
good condition.
2. Reinstall the filter
and air cleaner
cover.
AIR
CLEANER
COVER
NOTICE
A loose spark plug can become very hot and can damage the
engine. Overtightening the spark plug can damage the threads in
the cylinder head.
LATCH TABS
9. Attach the spark plug cap to the spark plug.
SPARK ARRESTER (optional equipment)
In some areas, it is illegal to operate an engine without a USDA
(United States Department of Agriculture)-qualified spark arrester.
Check local laws and regulations. A USDA-qualified spark arrester is
available from an authorized Honda servicing dealer.
FILTER
TABS
The spark arrester must be serviced every 100 hours to keep it
functioning as designed.
AIR
DUCT
If the engine has been running, the muffler will be hot. Allow it to cool
before servicing the spark arrester.
AIR CLEANER
BODY
Cleaning
Spark Arrester Removal
1. Tap the filter several times on a hard surface to remove dirt, or blow
compressed air [not exceeding 30 psi (207 kPa, 2.1 kg/cm²)]
through the filter from the clean side that faces the engine. Never
try to brush off dirt. Brushing will force dirt into the fibers.
1. Remove the three 6 mm
bolts from the muffler
protector, and remove
the muffler protector.
2. Wipe dirt from the air cleaner body and cover using a moist rag. Be
careful to prevent dirt from entering the air duct that leads to the
carburetor.
2. Remove the two special
screws from the spark
arrester, and remove
the spark arrester from
the muffler.
SPARK PLUG
Recommended Spark Plug: NGK BPR6ES
The recommended spark plug is the correct heat range for normal
engine operating temperatures.
MUFFLER
SPECIAL
SCREW (2)
MUFFLER
PROTECTOR
SPARK
ARRESTER
IDENTIFICATION
PLATE
SPARK
ARRESTER
6 mm BOLT (3)
NOTICE
Incorrect spark plugs can cause engine damage.
For good performance, the
spark plug must be properly
gapped and free of deposits.
Spark Arrester Cleaning &
Inspection
SPARK PLUG
WRENCH
1. Use a brush to remove
carbon deposits from the
spark arrester screen. Be
careful not to damage the
screen. Replace the spark
arrester if it has breaks or
holes.
1. Disconnect the cap from
the spark plug, and
remove any dirt from the
spark plug area.
2. Use the proper size spark
plug wrench to remove the
spark plug.
3. Inspect the spark plug. Replace it if
damaged, badly fouled, if the
sealing washer is in poor condition,
or if the electrode is worn.
2. Install the spark arrester
in the reverse order of
removal.
0.028 ~ 0.031 in
(0.70 ~ 0.80 mm)
4. Measure the electrode gap with a
suitable gauge. The correct gap is
0.028 - 0.031 in (0.70 - 0.80 mm). If
adjustment is needed, correct the
gap by carefully bending the side
electrode.
6
HELPFUL TIPS & SUGGESTIONS
DRAINING THE FUEL TANK AND CARBURETOR
STORING YOUR ENGINE
 WARNING
Storage Preparation
Gasoline is highly flammable and explosive, and you can
be burned or seriously injured when handling fuel.
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.
• Stop engine and keep heat, sparks, and flame away.
• Refuel only outdoors.
• Wipe up spills immediately.
Cleaning
1. Use a siphon pump (commercially available) and siphon the fuel
out of the fuel tank into an approved gasoline container.
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.
2. Place an approved gasoline container below the carburetor, and
use a funnel to avoid spilling fuel.
3. Loosen the carburetor drain screw. and drain the carburetor into an
approved gasoline container. After draining is completed, tighten
the carburetor drain screw.
NOTICE
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.
SIPHON PUMP
(COMMERCIALLY
AVAILABLE)
FLOAT BOWL
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.
DRAIN SCREW
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.
Engine Oil
1. Change the engine oil (see
page 5).
Fuel system damage or engine performance problems resulting from
neglected storage preparation are not covered under the Distributor’s
Limited Warranty (see page 11).
2. Remove the spark plug (see
page 6).
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.
3. Pour a tablespoon (5 - 10 cc)
of clean engine oil into the
cylinder.
ADDING A GASOLINE STABILIZER TO EXTEND FUEL
STORAGE LIFE
4. Pull the recoil starter several
times to distribute the oil.
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.
5. Reinstall the spark plug.
1. Add gasoline stabilizer following the manufacturer’s instructions.
2. After adding a gasoline stabilizer, run the engine outdoors for 10
minutes to be sure that treated gasoline has replaced the untreated
gasoline in the carburetor.
3. Stop the engine.
7
TECHNICAL & CONSUMER INFORMATION
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 spark-producing electric motor, or
where power tools are operated.
TECHNICAL INFORMATION
Serial Number Location
Record the engine serial
number in the space
below. You will need this
information when
ordering parts and when
making technical or
warranty inquiries.
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.
SERIAL
NUMBER
AND TYPE
LOCATION
Removal From Storage
Check your engine as described in the BEFORE OPERATION
CHECKS section of this manual (see page 2).
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.
SERIAL NUMBER
Engine serial number: GCAAA– ___ ___ ___ ___ ___ ___ ___
Engine type: ___ ___ ___ ___
If the cylinder was coated with oil during storage preparation, the
engine will smoke briefly at startup. This is normal.
Carburetor Modifications for High Altitude Operation
TRANSPORTING
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.
Keep the engine level when transporting to reduce the possibility of
fuel leakage.
TAKING CARE OF UNEXPECTED PROBLEMS
ENGINE WILL NOT
START
1. Check control positions
2. Check engine oil level.
3. Check fuel.
4. Remove and inspect
spark plug.
5. Take engine to an
authorized Honda
servicing dealer, or refer
to shop manual.
ENGINE LACKS
POWER
1. Check air filter
2. Check fuel.
3. Take engine to an
authorized Honda
servicing dealer, or refer
to shop manual.
Possible Cause
Correction
High altitude performance can be improved by specific modifications to
the carburetor. If you always operate your trimmer at altitudes above
5,000 feet (1,500 meters), 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.
Choke open.
Pull the choke to the
CLOSED position unless
the engine is warm.
Ignition switch OFF.
• Move the throttle lever to
the SLOW or FAST
position (p.3).
• Move the ignition switch
lever to the ON position
(p. 3).
• Move the engine stop
switch to the ON position
(p. 4).
Engine oil level low (Oil Alert
Fill with the recommended
models).
oil to the proper level (p. 5).
Out of fuel.
Refuel.
Drain the fuel tank and
Bad fuel; engine stored
carburetor (p. 7). Refuel
without treating or draining
gasoline, of refueled with bad with fresh gasoline.
gasoline.
Spark plug faulty, fouled, or
Replace the spark plug
improperly gapped.
(p. 6).
Spark plug wet with fuel
Dry and reinstall spark
(flooded engine).
plug. Start engine with
throttle lever in FAST
position (choke in OPEN
position).
Fuel filter clogged, carburetor Replace or repair faulty
components as necessary.
malfunction, ignition
malfunction, valves stuck,
etc.
Possible Cause
Filter clogged.
Bad fuel; engine stored
without treating or draining
gasoline, of refueled with bad
gasoline.
Fuel filter clogged, carburetor
malfunction, ignition
malfunction, valves stuck,
etc.
TYPE
Even with carburetor modification, engine horsepower will decrease
about 3.5% for each 1,000-foot (300-meter) increase in altitude. The
effect of altitude on horsepower will be greater than this if no
carburetor modification is made.
NOTICE
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 5,000 feet (1,500 meters) 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.
Correction
Clean or replace the filter
(p. 6).
Drain the fuel tank and
carburetor (p. 7). Refuel
with fresh gasoline.
Replace or repair faulty
components as necessary.
8
Oxygenated Fuels
Emission Control System Information
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.
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.
If you use oxygenated fuel, be sure it is unleaded and meets the
minimum octane rating requirements.
Honda utilizes lean carburetor settings and other systems to reduce
the emissions of carbon monoxide, oxides of nitrogen, and
hydrocarbons.
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 U.S. and California Clean Air Acts
The following are the EPA approved percentages of oxygenates:
ETHANOL
MTBE
EPA and California regulations require all manufacturers to furnish
written instructions describing the operation and maintenance of
emission control systems.
— (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.
The following instructions and procedures must be followed in order to
keep the emissions from your Honda engine within the emission
standards.
— (methyl tertiary butyl ether) 15% by volume
You may use gasoline containing up to 15% MTBE
by volume.
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:
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.
• 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 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 (see page 11).
If you are aware of any of the following symptoms, have your engine
inspected and repaired by your servicing dealer.
• Hard starting or stalling after starting.
• Rough idle.
• Misfiring or backfiring under load.
• Afterburning (backfiring).
• Black exhaust smoke or high fuel consumption.
Replacement Parts
The emission control systems on your Honda engine were designed,
built, and certified to conform with EPA and California 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 5. Remember that this
schedule is based on the assumption that your machine will be 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.
9
Air Index
Wiring Diagram
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.
With Oil Alert
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 Emission Control System Warranty (page 11) for
additional information.
Descriptive Term
Applicable to Emissions Durability Period
Moderate
50 hours (0–65 cc)
125 hours (greater than 65 cc)
Intermediate
125 hours (0–65 cc)
250 hours (greater than 65 cc)
Extended
300 hours (0–65 cc)
500 hours (greater than 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.
Without Oil Alert
Specifications
Length x Width x Height
13.6 x 14.5 x 13.0 in
(345 x 369 x 331 mm)
Dry weight
29 lb (13.2 kg)
Engine type
4-stroke, overhead cam, single cylinder
Displacement
[Bore x Stroke]
11.4 cu-in (187 cm3)
[2.7 x 2.0 in (69 x 50 mm)]
Max. output
6.0 bhp (4.4 kW, 6.0 PS) at 3,600 rpm
Max. torque
8.9 ft-lb (12.1 N•m, 1.23 kg/m) at 2,500 rpm
Fuel consumption
0.51 lb/hph (313 g/kWh, 230 g/PSh)
Cooling system
Forced air
Ignition system
Transistorized magneto
PTO shaft rotation
Counterclockwise
Tuneup Specifications
ITEM
SPECIFICATION
Valve clearance (cold)
IN: 0.15 ± 0.04 mm
EX: 0.20 ± 0.04 mm
Other specifications
MAINTENANCE
See your authorized
Honda dealer
No other adjustments needed.
Quick Reference Information
Fuel
Type
Engine Oil
Capacity
Type
Carburetor
Spark plug
Capacity
Idle Speed
Type
Gap
Maintenance
Before each use
First 5 hours
Subsequent
Unleaded gasoline with a pump octane rating
of 86 or higher (page 5).
0.53 US gal (2.0 l)
SAE 10W-30, API SH or SJ, for general use.
Refer to page 5.
0.61 US qt (0.58 l)
1,400 ± 150 rpm
BPR6ES (NGK)
0.028 – 0.031 in (0.7 – 0.8 mm)
Refer to page 6.
Check engine oil level. Refer to page 5.
Check air filter. Refer to page 6.
Change engine oil. Refer to page 5.
Refer to the maintenance schedule on
page 5.
10
CONSUMER INFORMATION
Emission Control System Warranty
Honda Publications
Your new Honda Power Equipment engine complies with both the U.S. EPA and State of
California emission regulations. American Honda provides the same emission warranty
coverage for engines sold in all 50 states.
These publications will give you additional information for maintaining
and repairing your engine.You may order them from an authorized
Honda engine servicing dealer.
Shop Manual
This manual covers complete maintenance and overhaul
procedures. It is intended to be used by a skilled
technician.
Parts Catalog
This manual provides complete, illustrated parts lists.
Your Warranty Rights And Obligations:
California
The California Air Resources Board and American Honda Motor Co., Inc. are pleased to
explain the emission control system warranty on your Honda Power Equipment engine. In
California, new utility and lawn and garden equipment engines must be designed, built and
equipped to meet the State's stringent anti-smog standards.
Other States
In other areas of the United States your engine must be designed, built, and equipped to
meet the U.S. EPA emission standards for spark-ignited engines at or below 19 kilowatts.
All States
Distributor’s Limited Warranty
PRODUCTS COVERED BY THIS
WARRANTY:
PRODUCT
APPLICATIONS
GC & GCV
Series Engines
All
1.
American Honda Motor Co., Inc. must warrant the emission control system on your power
equipment engine for the period of time listed below provided there has been no abuse,
neglect or improper maintenance of your power equipment engine. Where a warrantable
condition exists, American Honda Motor Co., Inc. will repair your power equipment engine
at no cost to you including diagnosis, parts and labor.
LENGTH OF WARRANTY:
(FROM DATE OF ORIGINAL
PURCHASE)
Your emission control system may include such parts as the carburetor or fuel injection
system, the ignition system, and catalytic converter. Also included may be hoses,
connectors and other emission-related assemblies.
NONCOMMERCIAL/ COMMERCIAL/
NONRENTAL
RENTAL
24 months
Manufacturer's Warranty Coverage:
3 months (1)
The 1995 and later power equipment engines are warranted for two years. If any emissionrelated part on your engine is defective, the part will be repaired or replaced by American
Honda Motor Co., Inc.
Honda GC and GCV general purpose engines are not covered by this warranty when
installed on concession type vehicles.
Owner's Warranty Responsibility:
To Qualify for this Warranty:
As the power equipment engine owner, you are responsible for the performance of the
required maintenance listed in your owner's manual. American Honda Motor Co., Inc.
recommends that you retain all receipts covering maintenance on your power equipment
engine, but American Honda Motor Co., Inc. cannot deny warranty coverage solely for the
lack of receipts or for your failure to ensure the performance of all scheduled maintenance.
The Honda general purpose engine must be purchased from a Honda general purpose
engine dealer or distributor authorized to sell that product in the United States, Puerto Rico,
or the U.S. Virgin Islands. This limited warranty applies to first retail purchaser and each
subsequent owner during the applicable warranty time period.
As the power equipment engine owner, you should however be aware that American
Honda Motor Co., Inc. may deny you warranty coverage if your power equipment engine or
a part has failed due to abuse, neglect, improper maintenance, or unapproved
modifications.
What American Honda Will Repair or Replace Under Warranty:
American Honda will repair or replace, at its option, any part that is proven to be defective
in material or workmanship under normal use during the applicable warranty time period.
Warranty repairs and replacements will be made without charge for parts or labor. Anything
replaced under warranty becomes the property of American Honda Motor Company, Inc.
All parts replaced under warranty will be considered as part of the original product and any
warranty on those parts will expire coincident with the original product warranty.
You are responsible for presenting your power equipment engine to a Honda Power
Equipment dealer as soon as a problem exists. The warranty repairs should be completed
in a reasonable amount of time, not to exceed 30 days.
If you have any questions regarding your warranty rights and responsibilities, you should
write or call the Honda Power Equipment Customer Relations Department. Refer to
page 12 for contact information.
To Obtain Warranty Service:
You must take your Honda general purpose engine, or the equipment in which it is
installed, together with proof of original retail purchase date, at your expense, to a Honda
engine dealer or distributor authorized to sell that product in the United States, Puerto Rico,
or the U.S. Virgin Islands, during their normal business hours. Many Honda engine dealers
and distributors are listed in the yellow pages of the telephone directory under gasoline
engines, lawn & garden equipment & supplies, etc.
If you are unable to obtain warranty service, or are dissatisfied with the warranty service
you receive, take the following steps: First, contact the owner of the dealership or
distributor involved; normally this should resolve the problem. However, if you should
require further assistance, write or call the Power Equipment Customer Relations
Department of American Honda Motor Co., Inc. Refer to page 12 for contact information.
Exclusions:
THIS WARRANTY DOES NOT EXTEND TO PARTS AFFECTED OR DAMAGED BY THE
PRODUCT IN WHICH THE ENGINE IS INSTALLED, OR BY ACCIDENT AND/OR
COLLISION, MISUSE, NEGLECT, PARTS WORN BEYOND SERVICE LIMITS DUE TO
NORMAL WEAR/NORMAL SERVICE LIFE, PARTS AFFECTED OR DAMAGED BY THE
CONVERSION TO OR USE OF FUEL OTHER THAN THE FUEL(S) WHICH THE
ENGINE IS ORIGINALLY MANUFACTURED TO USE, POOR OPERATION RELATED TO
FUEL CONTAMINATION OR FUEL QUALITY, PARTS DAMAGED BY FUEL
CONTAMINATION, THE INCORPORATION OF, OR USE OF, UNSUITABLE
ATTACHMENTS OR PARTS, THE UNAUTHORIZED ALTERATION OF ANY PART OR
ANY CAUSES OTHER THAN DEFECTS IN MATERIAL OR WORKMANSHIP OF THE
ENGINE. USE OF THE HONDA GENERAL PURPOSE ENGINE FOR RACING OR
COMPETITION WILL VOID THIS WARRANTY.
Disclaimer of Consequential Damage and Limitation of Implied Warranties:
AMERICAN HONDA DISCLAIMS ANY RESPONSIBILITY FOR LOSS OF TIME OR USE
OF THE ENGINE, OR THE EQUIPMENT IN WHICH THE ENGINE IS INSTALLED,
TRANSPORTATION, COMMERCIAL LOSS, OR ANY OTHER INCIDENTAL OR
CONSEQUENTIAL DAMAGE. ANY IMPLIED WARRANTIES ARE LIMITED TO THE
DURATION OF THIS WRITTEN LIMITED WARRANTY. Some states do not allow
limitations on how long an implied warranty lasts and/or do not allow the exclusion or
limitation of incidental or consequential damages, so the above exclusions and limitations
may not apply to you.
This warranty gives you specific legal rights, and you may also have other rights which vary
from state to state.
11
Warranty Coverage:
Distributor/Dealer Locator Information
Honda power equipment engines manufactured after January 1, 1995 and sold in the State
of California, and U.S. EPA certified engines manufactured on or after September 1, 1996
and sold in all of the United States, are covered by this warranty for a period of two years
from the date of delivery to the original retail purchaser. This warranty is transferable to
each subsequent purchaser for the duration of the warranty period.
To find an Authorized Honda Engine Distributor/Dealer anywhere in
the United States:
Call (800) 426-7701
Warranty repairs will be made without charge for diagnosis, parts or labor. All defective
parts replaced under this warranty become the property of American Honda Motor Co., Inc.
A list of warranted parts is on the reverse side of this warranty statement. Normal
maintenance items, such as spark plugs and filters, that are on the warranted parts list are
warranted up to their required replacement interval only.
or visit our website: www.honda-engines.com
Warranty Service Information
Honda engine 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 or
General Manager can help. Almost all problems are solved in this way.
American Honda Motor Co., Inc. is also liable for damages to other engine components
caused by a failure of any warranted part during the warranty period.
Only Honda approved replacement parts may be used in the performance of any warranty
repairs and must be provided without charge to the owner. The use of replacement parts
not equivalent to the original parts may impair the effectiveness of your engine emission
control system. If such a replacement part is used in the repair or maintenance of your
engine, and an authorized Honda dealer determines it is defective or causes a failure of a
warranted part, your claim for repair of your engine may be denied. If the part in question is
not related to the reason your engine requires repair, your claim will not be denied.
To Obtain Warranty Service:
If you are dissatisfied with the decision made by the dealership’s
management, contact the Honda Power Equipment Customer Service
Office. You can write:
You must take your Honda Power Equipment engine or the product on which it is installed,
along with your warranty registration card or other proof of original purchase date, at your
expense, to any Honda Power Equipment dealer who is authorized by American Honda
Motor Co., Inc. to sell and service that Honda product during his normal business hours.
Claims for repair or adjustment found to be caused solely by defects in material or
workmanship will not be denied because the engine was not properly maintained and
used.
American Honda Motor Co., Inc.
Power Equipment Division
Customer Service Office
4900 Marconi Drive
Alpharetta, GA 30005-8847
If you are unable to obtain warranty service, or are dissatisfied with the warranty service
you received, contact the owner of the dealership involved. Normally this should resolve
your problem. However, if you require further assistance, write or call the Power Equipment
Customer Relations Department of American Honda Motor Co., Inc.
Or telephone: (770) 497-6400, M-F, 8:30 am - 5:00 pm EST
When you write or call, please give us this information:
Exclusions:
•
•
•
•
•
•
•
FAILURES OTHER THAN THOSE RESULTING FROM DEFECTS IN MATERIAL OR
WORKMANSHIP ARE NOT COVERED BY THIS WARRANTY. THIS WARRANTY DOES
NOT EXTEND TO EMISSION CONTROL SYSTEMS OR PARTS WHICH ARE
AFFECTED OR DAMAGED BY OWNER ABUSE, NEGLECT, IMPROPER
MAINTENANCE, MISUSE, MISFUELING, IMPROPER STORAGE, ACCIDENT AND/OR
COLLISION, THE INCORPORATION OF, OR ANY USE OF, ANY ADD-ON OR MODIFIED
PARTS, UNSUITABLE ATTACHMENTS, OR THE UNAUTHORIZED ALTERATION OF
ANY PART.
THIS WARRANTY DOES NOT COVER REPLACEMENT OF EXPENDABLE
MAINTENANCE ITEMS MADE IN CONNECTION WITH REQUIRED MAINTENANCE
SERVICES AFTER THE ITEM'S FIRST SCHEDULED REPLACEMENT AS LISTED IN
THE MAINTENANCE SECTION OF THE PRODUCT OWNER'S MANUAL, SUCH AS:
SPARK PLUGS AND FILTERS.
Disclaimer of Consequential Damage and Limitation of Implied Warranties:
AMERICAN HONDA MOTOR CO., INC. DISCLAIMS ANY RESPONSIBILITY FOR
INCIDENTAL OR CONSEQUENTIAL DAMAGES SUCH AS LOSS OF TIME OR THE USE
OF THE POWER EQUIPMENT, OR ANY COMMERCIAL LOSS DUE TO THE FAILURE
OF THE EQUIPMENT; AND ANY IMPLIED WARRANTIES ARE LIMITED TO THE
DURATION OF THIS WRITTEN WARRANTY. THIS WARRANTY IS APPLICABLE ONLY
WHERE THE CALIFORNIA OR U.S. EPA EMISSION CONTROL SYSTEM WARRANTY
REGULATION IS IN EFFECT.
Emission Control System Warranty Parts:
SYSTEMS COVERED
BY THIS WARRANTY:
PARTS
DESCRIPTION:
Fuel Metering
Carburetor assembly, Fuel injection pump,
Fuel injection nozzle, Fuel regulator
Exhaust
Catalyst
Air Induction
Air filter housing, Air filter element*,
Crankcase breather tube
Ignition
Flywheel magneto, Ignition pulse generator,
Ignition coil assembly, Ignition control
module, Spark plug cap, Spark plug*
Miscellaneous Parts
Tubing, fittings, seals, gaskets, and clamps
associated with these listed systems.
* Covered up to the first required replacement only.
See the Maintenance Schedule on page 5.
12
Engine model, type and serial number (see page 8)
Equipment manufacturer’s name and model the engine is used on
Name of the dealer who sold the engine to you
Name and address of the dealer who services your engine
Date of purchase
Your name, address, and telephone number
A detailed description of the problem
NOTES
NOTES