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CS-352 MAINTENANCE
© 08/2013 ECHO Inc.
X7503272504 33
Exhaust Port Cleaning
Level 2.
1. Remove cylinder cover and remove spark plug lead.
2. Place piston at top dead center.
3. Remove muffler. Check parts for wear or damage, and
replace if necessary.
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. Use a wood or plastic scraping tool to clean deposits from
cylinder exhaust port.
5. Install muffler. Tighten muffler mounting bolts (or nuts) to 7-
9 N•m (60-80 in•lbf).
6. Install cylinder cover and attach spark plug lead.
7. Start engine, and allow unit to warm up at idle for several
minutes.
8. Stop engine, and re-tighten mounting bolts (or nuts) to 7- 9
N•m (60-80 in•lbf).
9. Install guide bar and chain. Adjust chain tension.
10. Start engine and check for exhaust leaks between muffler and cylinder head. Stop engine if leak is found
and correct problem before operating chain saw.
Parts Required: As needed: Muffler gasket