Echo CS-370 Manuel D'instructions page 28

EXHAUST PORT CLEANING
Level 2
Tools required: Wood or plastic scraper, Cross Head Screwdriver,
8mm Wrench
Parts Required: As needed: Muffler gasket
1. Remove air filter cover and remove spark plug lead.
2. Remove engine cover (3 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 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.
5. Inspect muffler gasket, and replace if damaged.
6. Install muffler gasket and muffler.
7. Tighten muffler mounting bolts (or nuts) to 70-95 in • lbf (80-110
kgf • cm).
8. Install engine cover and attach spark plug lead.
9. Replace air filter cover.
10. Start engine, and warm to operating temperature.
11. Stop engine, and re-tighten mounting bolts (or nuts) to specifica-
tions.
CS-370
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B
A