10
ENGLISH
SPARK PLUG
Recommended Spark Plugs:
CR5HSB (NGK)
U16FSR-UB (DENSO)
The recommended spark plug has the correct heat range for normal
engine operating temperatures.
An incorrect spark plug can cause engine damage.
For good performance, the spark plug must be properly gapped and free
of deposits.
1. Disconnect the spark plug cap, and remove any dirt from around the
spark plug area.
2. Remove the spark plug with a 5/8-inch spark plug wrench.
3. Inspect the spark plug.
Replace it if damaged or badly
fouled, if the sealing washer is in
poor condition, or if the
electrode is worn.
4. Measure the spark plug
electrode gap with a wire-type
feeler gauge. Correct the gap, if
necessary, by carefully bending
the side electrode.
The gap should be:
0.6–0.7 mm (0.024–0.028 in)
5. Install the spark plug carefully,
by hand, to avoid cross-
threading.
6. After the spark plug is seated, tighten with a 5/8-inch spark plug
wrench to compress the sealing washer.
7. When installing a new spark plug, tighten 1/2 turn after the spark
plug seats to compress the washer.
8. When reinstalling a used spark plug, tighten 1/8–1/4 turn after the
spark plug seats to compress the washer.
TORQUE: 12 N∙m (9 lbf∙ft, 1.2 kgf∙m)
A loose spark plug can overheat and damage the engine.
Overtightening the spark plug can damage the threads in the cylinder
head.
9. Attach the spark plug cap to the spark plug.
SPARK ARRESTER (optional equipment)
In Europe and other countries where the machinery directive 2006/42/EC
is enforced, this cleaning should be done by your servicing dealer.
Your 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. A spark arrester is available from authorized Honda
servicing dealers.
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 hot. Allow it to cool
before servicing the spark arrester.
Spark Arrester Removal
1. Remove the three 6 mm bolts from the muffler protector, and
remove the muffler protector.
2. Remove the special screw from the spark arrester, and remove the
spark arrester from the muffler.
Spark Arrester Cleaning &
Inspection
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.
2. Install the spark arrester and muffler protector in the reverse order of
disassembly.
SPARK PLUG WRENCH
SPARK PLUG CAP
0.6–0.7 mm
(0.024–0.028 in)
SEALING
WASHER
SIDE ELECTRODE
6 mm
BOLTS
SPARK ARRESTER
MUFFLER
SPECIAL SCREW
MUFFLER PROTECTOR
SPARK ARRESTER SCREEN
37ZDJ6010.fm 10 ページ ２０１９年１１月１８日 月曜日 午後３時５７分
