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Exhaust System
Spark Arrestor Screen
Level 2.
Parts Required: Spark Arrestor Screen, Gasket
Carbon deposits in muffler will cause a drop in engine output and overheating. Spark arrestor screen must be checked periodically.
1.Remove spark plug lead from spark plug.
2.Remove engine cover.
3.Remove exhaust deflector (A), spark arrestor cover (B), gasket (C), and spark arrestor screen (D) from muffler. Replace screen if plugged with carbon deposits.
Note: When cleaning carbon deposits, be careful not to damage the catalytic element inside muffler.
4.Clean carbon deposits from muffler components.
5.Install spark arrestor screen, gasket, and covers.
6.Install engine cover.
7.Attach spark plug lead.
Exhaust Port Cleaning
Level 2.
Parts Required: As needed: Heat Shield
1.Remove spark plug lead from spark plug, and remove engine cover.
2.Place piston at top dead center. Remove muffler (A) and heat shield (B).
3.Use a wood or plastic scraping tool to clean deposits from cylinder exhaust port.
D C
B
A
BA
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.
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© 03/2013 ECHO Inc.
