Echo X750020201 User Manual

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CS-352
EXHAUST PORT CLEANING
Level 2
Parts Required:   As needed: Muffler gasket
1.  Remove cylinder cover and remove spark plug lead.
2.  Place piston at top dead center. Remove muffler (A) and
muffler gasket (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 muffler gasket, and replace if damaged.
5.  Install muffler gasket and muffler.
6.  Tighten muffler mounting bolts (or nuts) to 60-80 in • lbf (70-
90 kgf • cm).
7.  Install cylinder 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
specifications.
A
B