HONDA FG110 - Manual (Page 11)

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