Honda GX140, GX110 Owner's Manual

Thank you for purchasing a Honda engine. This manual covers the operation and maintenance of GX 110 and GX 140

engines. 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 it is resold. Pay special attention to statements preceded by the following words:

rmm

life if instructions are not followed. CAUTION: Indicates a possibility of personal injury or equipment damage

if instructions are not followed.

NOTE: Gives helpful information. If a problem should arise, or if you have any questions about your engine,

consult an authorized Honda dealer. mzm

vice if operated according to instructions. Read and understand the Owner’s Manual before operating the engine. Failure to do so could result in personal injury or equipment damage.

Indicates a strong possibility of severe personal injury or loss of

Honda engines are designed to give safe and dependable ser-

SAFETY INSTRUCTIONS

1. COMPONENT IDENTIFICATION

2. BATTERY CONNECTIONS (for electric starter)

REMOTE CONTROL LINKAGE PRE-OPERATION CHECK

5. STARTING THE ENGINE

OPERATION

STOPPING THE ENGINE

High altitude operation

MAINTENANCE

10.

TRANSPORTING/STORAGE

11.

TROUBLESHOOTING

12.

SPECIFICATIONS WIRING DIAGRAM

13. WARRANTY SERVICE

14.

........................................................................

............. . .....................................................

.................................................................

.......................................................

..............................................

.................................................

.......................................................

........................................................

.......................................................

...................................................

............................................................

...............................................................

...........................................................

..........................

3 4 5 6

7 13 16 18 19 20 30 31 33 34 36

1. SAFETY lNSTRU.KTlOMS

To ensure safe operation -

To prevent fire hazards and to provide adequate ventilation, keep the

engine at least 3 ft away from buildings and other equipment during operation.

Do not place flammable objects such as gasoline, matches, etc., close to the engine while it is running.

Refuel in a well-ventilated area with the engine stopped. Gasoline is

flammable and explosive under certain conditions.

Do not overfill the tank. There should be no fuel in the filler neck. Make

sure that the filler cap is closed securely.

If any fuel is spilled, clean it up completely before starting the engine.

Do not smoke or allow flames or sparks where the engine is refueled or

where gasoline is stored.

Exhaust gas contains poisonous carbon monoxide. Avoid inhalation of

exhaust gases. Never run the engine in a closed garage or confined area.

Operate the engine on a level surface. If the engine is tilted, fuel spillage may result.

Do not place anything on the engine, as it may create a fire hazard.

A spark arrester is available as an optional part for this engine. It is illegal in some areas to operate an engine without a spark arrester. Check local

laws and regulations before operating.

2. COMPONENT IDENTIFICATOON

MUFFLER

SPARK PLUG-

THROTTLE LEVER

AIR CLEANE

CHOKE LEVER

ENGINE SWITCH

SERIAL NUMBER AN

ENGINE TYPE

FUEL VALVE

FUEL FILLER CAP

RECOIL STARTER

S*ARTER GRIP

FILLER

CAP

DRAIN PLUG

OIL

3. BATTERY CONNECTIONS (for electric starter)

Use a 12 volt battery with an ampere-hour rating of at least 18 AH. Connect the battery positive (+) cable to the starter solenoid terminal as

shown. Connect the battery negative (-1 cable to an engine mounting bolt, frame

bolt, or other good engine ground connection. Check the battery cable connections to be sure the cables are secured and

free of corrosion. Remove any corrosion and coat the terminals and cable ends with grease.

The battery gives off explosive gases; keep sparks, flames and cigarettes away. Provide adequate ventilation when charging or using batteries in an enclosed space.

The battery contains sulfuric -a&d (electrolyte). Contact with skin or eyes may cause severe burns. Wear protective clothing and a face shield.

- If electrolyte gets on your skin, flush with water.

- If electrolyte gets in your’ eyes, flush with water for at least 15 minutes and call a physician immediately.

Electrolyte is poisonous.

- If swallowed, drink large quantities of water or milk and follow with milk of magnesia or vegetable oil and call a physician.

. KEEP OUT OF REACH OF CHILDREN.

CAUTION:

Use only distilled water in the battery. Tap water will shorten the service life of the battery.

Filling the battery above the UPPER LEVEL line may cause the electrolyte to overflow, resulting in corrosion to engine or nearby parts. Immediately wash off any spilled electrolyte.

Do not connect the battery in reverse polarity as this will short circuit the battery charging system and trip the circuit breaker.

NEGATIVE (-1 .’ BATTERY CABLE

STARTER SOLENOID

SITIVE (+) BATTERY CABLE

4. REMOTE CONTROL LBNMAGE

(for throttle’ and choke cables)

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 braided wire cable. If using a braided wire cable, add a return spring as shown.

It is necessary to loosen the throttle lever friction nut when operating the

throttle with a remote cable.

RETURN SPRING

THROTTLE LEVER

PIVOT NUT

Flexible wire core

WIRE HOLDER

CHOKE LEVER

5. PRE-OPERATION CHECK

1. ENGINE OIL

CAUTION:

Engine oil is a major factor affecting engine performance and service life. Non-detergent oils and vegetable oils are not recommended.

Be sure to check the engine on a level surface with the engine stopped.

Use Honda 4-stroke oil or an equivalent high-detergent, premium quality motor oil certified to meet or exceed U.S. automobile manufac-

turer’s requirements for Service

Classification SE or SF. Motor oils classified SE or SF will show this designation on the container.

SAE low-40 is recommended for general, all-temperature use.

Other viscosities shown in the chart

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

indicated range.

-30 -20 -10 0 10 Ambient temperature

20 30 40°C

1. Remove the oil filler cap and wipe the dipstick clean.

2. Insert the dipstick into the oil filler neck but do not screw it in.

3. If the level is low, fill to the top of the oil filler neck with the recommended oil.

CAUTION:

Running the engine with insufficient oil can cause serious engine damage.

Engine oil is a major factor affecting engine performance and service life. Nondetergent oils, castor-based oils and 2-stroke engine oils are not recommended because they have inadequate lubricating characteristics.

2. REDUCTION GEAR OIL

1. Remove the oil filler cap and wipe the dipstick clean.

2. Insert the dipstick into the filler neck but do not screw it in.

3. If the level is low, fill to the upper level mark with the same oil recommended for the engine (see engine oil recommendations on page 7).

Oil capacity: 0.5 e (0.53 US qt 0.44 Imp qt)

UPPER LEVEL

, DIPSTICK/FILLER CAP

DRAIN BOLT

1. Remove the oil level bolt.

2. Check the oil level; it should reach the edge of the oil level bolt hole. If the oil level is low, remove the filler bolt, and add oil until it starts to flow

-out the oil level bolt hole. Use the same oil recommended for the engine (see engine oil recommendations on page 7).

3. Install the oil level bolt and filler bolt. Tighten them securely.

Oil capacity: 0.15 e (0.16 US qt, 0.13 Imp qt)

.LER BOLT

OIL LEVEL

3. AIR CLEANER CAUTION: Never run the engine without the air cleaner. Rapid engine

wear will result from contaminants, such as dust and dirt. Being drawn through the carburetor and into the engine.

Check the air cleaner elements to be sure they are clean and in good condition. Clean or replace the elements if necessary (page 22).

1. Check the air cleaner elements to be sure they are clean and in good condition. Clean or replace the elements if necessary (page 23).

2. Check the cyclone housing, and clean it if it is clogged or excessively dir-

ty (page 23).

CYCLONE

ELEMENTS

1. Check the air cleaner element to be sure it is clean and in good condition. Clean or replace the element if necessary (page 24).

2. Check oil level and condition.

OIL CEVEL

4. FUEL

Your engine ‘,” cJesigned to use any gasoline that has a pump octane

number (R ) of 86 or higher, or that has a research oc-

tane number if 91 or higher. Gasoline pumps at service station normally

display the pump octane number.

We recommend that you use unleaded fuel because it produces fewer

engine and spark plug deposits and extends the life of exhaust system components.

Never use stale or contaminated gasoline or an oil/gasoline mixture. Avoid getting dirt, dust or water in the fuel tank. Use of a lower octane gasoline can cause persistent “pinging” or heavy “spark knock” (a metallic rapping noise) which, if severe, can lead to engine damage.

CAUTION: If “spark knock” or “pinging” occurs at a steady engine speed under normal load, change brands of gasoline. If spark knock or pinging persists, consult your authorized Honda dealer. Failure to do so is considered misuse, and damage caused by misuse is not covered by Honda’s Limited Warranty.

Occasionally you may experience light spark knock while operating under heavy loads. This is no cause for concern, it simply means your engine is operating efficiently.

Gasoline is extremely flammable and is explosive under certain conditions.

Refuel in a well-ventilated area with the engine stopped. Do not smoke or allow flames or sparks in the area where the engine is refueled or where gasoline is stored.

Do not overfill the fuel tank (there should be no fuel in the filler neck). After refueling, make sure the tank cap is closed properly and securely.

Be careful not to spill fuel when refueling. Spilled fuel or fuel vapor may ignite. If any fuel is spilled, make sure the area is dry before starting the engine.

Avoid repeated or prolonged contact with skin or breathing of vapor. KEEP OUT OF REACH OF CHILDREN.

Fuel tank capacity: GXl lo.....

GX140 . . . . . 3.6 e (0.95 US Gal, 0.79 Imp Gal.)

2.5 &’ (0.66 US Gal, 0.55 Imp Gal.)

+ 28 hidden pages

Honda GX140, GX110 Owner's Manual

CONTENTS