Honda FG110 User Manual download pdf (Page 11)

SPARK PLUG

Recommended Spark Plug: NGK - CMR5H

NOTICE

An incorrect spark plug can cause engine damage.

1. Use a 4 mm Allen

wrench to loosen the

5 x 12 mm hex bolt

and remove the fan

cover.

2. Disconnect the

spark plug cap, and

remove any dirt from

around the spark

plug area.

3. Remove the spark

plug with a 5/8-inch

spark plug wrench.

4. Inspect the spark

plug. Replace it if the

electrodes are worn, or if

the insulator is cracked or

chipped.

5. Measure the spark plug

electrode gap with a

suitable gauge.

GAP: 0.024 ~ 0.028 in

(0.60 ~ 0.70 mm).

Correct the gap, if

necessary, by carefully

bending the side

electrode.

6. Install the spark plug

carefully, by hand, to avoid

cross-threading.

7. After the spark plug seats,

tighten with a 5/8-inch spark

plug wrench to compress

the washer.

If reinstalling the used spark

plug, tighten 1/8 ~ 1/4 turn

after the spark plug seats.

If installing a new spark plug,

tighten 1/2 turn after the

spark plug seats.

NOTICE

A loose spark plug can overheat and damage the engine.

Overtightening the spark plug can damage the threads in the

cylinder head.

8. Attach the spark plug cap.

9. Install the fan cover and 5 x 12 mm hex bolt and tighten securely.

SPARK ARRESTER (OPTIONAL EQUIPMENT)

Your tiller engine is not factory-equipped with a spark arrester. In

some areas, it is illegal to operate an engine without a spark arrester.

Check local laws and regulations. An optional USDA approved spark

arrester is available from an authorized Honda servicing dealer. See

page 20 for part numbers.

The spark arrester must be serviced every 100 hours to keep it

functioning as designed.

If the engine has been running, the muffler will be very hot. Allow the

muffler to cool before servicing the spark arrester.

1. Loosen the 5 mm hex bolt, then remove the fan cover.

2. Remove the 3 x 6 mm

self-tapping screw from

the spark arrester, and

remove the spark arrester

from the muffler.

3. Use a brush to remove

carbon deposits from the

spark arrester screen. Be

careful to avoid damaging

the screen.

4. The spark arrester must be

free of breaks and holes.

Replace the spark arrester

if it is damaged.

5. Install the spark arrester in the reverse order of disassembly.

6. Install the fan cover, and tighten the 5 mm hex bolt securely.

Cooling Fin Inspection

Inspect the engine

cooling fins. You

should clean out any

dirt and debris if air is

obstructed from

flowing across the

cooling fins.

1. Loosen the 5 mm

hex bolt, then

remove the fan

cover.

2. Remove all dirt and

debris from the

cooling fins.

3. Install the fan cover, and tighten the 5 mm hex bolt securely.

5 x 12 mm

HEX BOLT

FAN COVER

SPARK PLUG

SPARK PLUG CAP

SEALING

WASHER

0.024 ~ 0.028 in

(0.60 ~ 0.70 mm)

3 x 6 mm SELF

TAPPING SCREW

SPARK

ARRESTER

MUFFLER

COOLING

FINS

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Honda FG110 User Manual Page 11

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