GX120 ·GX160 ·GX200

Maintenance Information

REGULAR SERVICE PERIOD (1)

Perform at every indicated month or operating

hour interval, whichever comes first.

ITEM

Check level

Engine oil

Reduction case oil

A B

C

Change

Check level

(applicable types) Change

Check

Air cleaner D E F

A

G Clean

Replace

Each use

●

●

●

First month or

20 hrs.

●

●

Every

3 months or

50 hrs.

● (2)

Every

6 months or

100 hrs.

●

●

Every year or

300 hrs.

●

(3)

Sediment cup

Spark plug H

Clean

Check-adjust

Replace

●

●

●

Spark arrester

(applicable types)

Idle speed

Valve clearance

Combustion chamber

Fuel tank and filter

Fuel tube

J

I

K

L

M

M

Clean

Check-adjust

Check-adjust

Clean

Clean

Check

After every 500 hrs. (4)

●

(5)

●

(4)

Every 2 years (Replace if necessary) (4)

● (4)

●

(4)

(1) For commercial use, log hours of operation to determine proper maintenance intervals.

(2) Service more frequently when used in dusty areas. (3) Replace paper element type only.

(4) These items should be serviced by your servicing dealer, unless you have the proper tools and are mechanically proficient.

Refer to Honda shop manual for servicing procedures.

(5) In Europe and other countries where the machinery directive 2006/42/EC is enforced, this cleaning should be done by your servicing dealer.

F FOAM ELEMENT

NONFLAMMABLE

SOLVENT

ENGINE OIL

SQUEEZE THOROUGHLY

Excess oil will restrict air flow through the foam element and may transfer to the paper element, soaking and clogging it.

H GAP: 0.7 - 0.8 mm

SIDE ELECTRODE

Measure the plug gap with a wire-type feeler gauge.

If necessary, adjust the gap by bending the side electrode.

A OIL FILLER

CAP/DIPSTICK

B SAE Viscosity Grades

Standard spark plug:

BP6ES, BPR6ES (NGK)

W20EP-U, W20EPR-U (DENSO)

UPPER LIMIT

CONTAINER

OIL DRAIN

BOLT

Insert the dipstick in the oil filter neck, but do not screw it in. Remove the dipstick and check the oil level.

AMBIENT TEMPERATURE

Engine oil capacity: 0.56 ℓ (GX120)

0.58 ℓ (GX160), 0.6 ℓ (GX200)

Recommended oil: SAE 10W-30

API service category: SE or later

D <DUAL ELEMENT TYPE> <CYCLONE TYPE>

C

PAPER ELEMENT

Remove the cyclone

D guide.

Wash the parts with water, dry them thoroughly, and reassemble them.

FOAM ELEMENT

Refer to the cleaning of foam element.

PAPER

ELEMENT

FOAM ELEMENT

Refer to the cleaning of foam element.

AIR GUIDE

CYCLONE HOUSING

Paper element: Tap the element lightly several times on a hard surface to remove dirt, or blow compressed air (not exceeding 207 kPa, 2.1 kgf/cm² , 30 psi) through the element from the inside.

Never try to brush off dirt; brushing will force dirt into the paper fibers.

C

1/2 REDUCTION (CENTRIFUGAL CLUTCH TYPE)

OIL FILLER CAP/DIPSTICK

Oil capacity: 0.5 ℓ

OIL DRAIN

BOLT

1/6 REDUCTION

FILLER BOLT

DIPSTICK

UPPER LIMIT

Use the same oil as used in the engine.

OIL

LEVEL

BOLT

Oil capacity: 0.15 ℓ

E <LOW PROFILE TYPE>

AIR FILTER ELEMENT

Wash the element in a solution of household detergent and warm water, then rinse thoroughly, or wash in nonflammable or high flash point solvent.

Allow the element to dry thoroughly.

Soak the air filter element in clean engine oil and squeeze out the excess oil.

J

TOP HOLE

ALIGN

TRIANGLE MARK

Set the piston at top dead center of the compression stroke (both valves fully closed).

ROCKER ARM

PIVOT

Standard valve clearance:

0.15 mm ± 0.02 mm (IN)

0.20 mm ± 0.02 mm (EX)

WIRE BRUSH

Remove any carbon deposits from the combustion chamber using a soft wire brush.

G <OIL BATH TYPE>

FOAM

ELEMENT

Refer to the cleaning of foam element.

AIR CLEANER

CASE

OIL

LEVEL

Fill the air cleaner case to the level mark with the same oil that is recommended for the engine.

Air cleaner oil capacity: 60 cc

I

H

Standard idle speed:

1,400 ± 150 rpm

THROTTLE STOP SCREW

・On some applications the engine speed is

fixed and does not idle.

・The standard idle speed may be different

depending on the application.

Refer to the equipment manufacturer's

instructions for specific idle speed setting.

K

FEELER GAUGE

M

・Clean the fuel tank

with nonflammable

solvent and allow

the fuel tank to dry

thoroughly.

・Clean the filter with

nonflammable

solvent.

Inspect the fuel

filter to be sure it is

undamaged.

ROCKER ARM

ROCKER ARM

PIVOT LOCK NUT

O-RING

FUEL FILTER

FUEL FILTER

JOINT NUT

FUEL TUBE

Inspect for cracks or deterioration and replace if necessary.

© Honda Motor Co., Ltd. 2009