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Be sure to block the air intake hole.
2. Spark arrester
The muffler is equipped with a spark arrester to
prevent red hot carbon from flying out of the
exhaust outlet. Periodically check and clean as
necessary with a wire brush after removing two
muffler cover nuts and one screw.
(1) Spark arrester
Never use a muffler if the spark arrester is missing
or defective.
3. Exhaust port
Remove the muffler, insert a screwdriver into the
vent, and wipe away any carbon buildup after
every 100 hours of use. Wipe away any carbon
buildup on the muffler exhaust vent and the
cylinder exhaust port at the same time.
(1) Muffler exhaust vent
(2) Cylinder exhaust port
5. Sprocket
Check for cracks and for excessive wear interfering
with the chain drive. If the wear is considerable,
replace it with new one. Never fit a new chain on a
worn sprocket, or a worn chain on a new sprocket.
NOTE
NOTE
9. Maintenance
F9-8
F9-9
0.5mm
F9-10