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Exhaust Port Cleaning
Level 2
Tools required: Wood or plastic scraper, Torx L-Wrench T27
Parts Required: As needed: Muffler gasket
1. Remove air filter cover.
2. Remove spark plug lead from spark plug, and remove engine cover
(10 screws).
3. Place piston at top dead center. Remove muffler (A) and muffler
gasket (B ).
4. Use a wood or plastic scraping tool to clean deposits from
cylinder exhaust port.
IMPORTANT
Never use a metal tool to scrape carbon from the exhaust port.
Do not scratch the cylinder or piston when cleaning the exhaust
port. Do not allow carbon particles to enter the cylinder.
A
B
EXHAUST SYSTEM
Spark Arrestor Screen
Level 2.
Tools required: Torx L-Wrench T27
Parts Required: Spark arrestor screen, Gasket
IMPORTANT
Carbon deposits in muffler will cause a drop in engine output and
overheating. Spark arrestor screen must be checked periodically.
1. Disconnect spark plug lead from spark plug.
2. Remove spark arrestor cover (A), gasket (B) and spark arrestor
screen (C) from muffler. Replace screen if plugged with carbon
deposits.
NOTE
When cleaning carbon deposit, be careful not to damage the
catalytic element inside muffler.
3. Install spark arrestor screen, gaskets, and cover.
4. Connect spark plug lead.
A
B
C