CS-303T
MAINTENANCE
X7503209108
53
© 10/20 ECHO Incorporated
5.
Assemble components in reverse order.
Exhaust Port Cleaning
Level 2.
1.
Remove spark plug lead.
2.
Remove muffler cover.
3.
Place piston at top dead center.
4.
Remove muffler. Check parts for
wear or damage, and replace if
necessary.
5.
Use a wood or plastic scraping
tool to clean deposits from
cylinder exhaust port.
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.
6.
Install muffler. Tighten bolts to 9-11 N•m (80-95 in•lbf).
7.
Connect spark plug lead.
8.
Start engine, and allow unit to warm up at idle for several minutes.
9.
Stop engine, and re-tighten mounting nuts to 9-11 N•m (80-95 in•lbf).
10. Install muffler cover.
11. 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
