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10. Maintenance
5. 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
NOTE
Never use a muffler if the spark arrester is missing or defective.
6. 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
7. 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.
0.5mm
46