<<29>>
8
.
3
.
2)
Take off the spark plug with the spark plug
spanner.
8
.
3
.
3)
Visual inspection the spark plug. Change a
new one if its insulator cracked or chipped.
Clean it with a wire brush if the spark plug is
reused.
0
.
60
-
0
.
70mm
(
0
.
024
-
0
.
028in
)
8.3.4) Measure the spark plug gap with a feeler
gauge. The normal value:0.6-0.7mm(0.024-
0.028in). Adjust the gap by bend one of the
electrode
carefully.
8.3.5) Reinstall the spark plug carefully, by hand,
to avoid cross-threading. A new spark plug
should be tightened 1/2 turn with a spanner.
A used Spark plug should be tightened 1/8 to
1/4 turn with spanner.
NOTE
NOTE
■
The spark plug must be securely tightened.
Tightening in wrong way will cause spark
plug hot, even damage the engine.
■
Never use a spark plug with an improper heat
range.
8.4) Spark Arrester Maintenance
WARNING
The
spark
arrester
must
be
maintained
every
100h
service
.
8.4.1
)
Remove
the screws
,
and
remove
the
muffler
guard
.
8.3.6) Reinstall the spark plug cap
8.3.7) Reinstall the spark plug maintenance cover.
only be maintained professional servic-
ing dealer, can not be maintained by
user
