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 the original spark plug, tighten 1/8–1/4 turn
after the spark plug seats to compress the washer.
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 PLUG WRENCH
SPARK PLUG CAP
0.6–0.7 mm
(0.024–0.028 in)
SEALING
WASHER
SIDE ELECTRODE
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.
6 mm
BOLTS
SPARK ARRESTER
MUFFLER
SPECIAL SCREW
MUFFLER PROTECTOR
SPARK ARRESTER SCREEN
37ZDD601.fm 10 ページ ２０１４年３月２５日 火曜日 午後１２時７分
