20
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 mufer (A) and heat
shield (B).
3. Use a wood or plastic scraping tool to clean deposits from cylin-
der 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.
4. Inspect heat shield and replace if damaged.
5. Install heat shield and mufer.
6. Tighten mufer mounting bolts (or nuts) to 60-70 in•lbf
(70-80 kgf•cm).
7. Install engine cover and attach spark plug lead.
8. Start engine, and warm to operating temperature.
9. Stop engine, and re-tighten mounting bolts (or nuts) to specica-
tions.
A
B
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