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Cylinder fi ns
Silencer cover
B
Silencer
A
CLEANING CYLINDER FINS (Check
Periodically)
NOTE
Clogged fi ns will cause poor engine cooling.
1. Carefully remove housing and clean dirt and
dust from fi ns.
2. Reinstall housing.
CLEANING SILENCER AND
EXHAUST PORT
(Check Periodically)
1. Carefully remove housing halves.
2. Remove and disassemble silencer.
NOTE
Be careful not to scratch the cylinder or piston
when cleaning the cylinder exhaust port.
3. Clean deposits from cylinder exhaust port and
silencer.
EXHAUST PORT CLEANING
Level 2.
Tools required: 4 mm Hex Wrench, Wood or
plastic scraper
Parts Required: As needed: Heat Shield
1. Remove spark plug lead from spark plug, and
remove engine cover (2 screws).
2. Place piston at top dead center. Remove
muffl er (A) and heat shield (B).
3. 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.
4. Inspect heat shield, and replace if damaged.
5. Install heat shield and muffl er.
16
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