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MAINTENANCE
5.
Use a wood or plastic scraping
tool to clean deposits from
cylinder exhaust port.
6.
Install muffler. Tighten muffler
mounting bolts (or nuts) to 8-11
N•m (70-95 in•lbf).
7.
Install engine cover and attach
spark plug lead.
8.
Replace air cleaner cover.
9.
Start engine, and allow unit to
warm up at idle for several minutes.
10. Stop engine, and re-tighten mounting bolts (or nuts) to 8-11 N•m (70-95
in•lbf).
11. Install guide bar and chain. Adjust chain tension.
12. 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.
Setting The Saw Chain
Drive link
Tie strap
Right hand cutter
Important points for proper maintenance of saw chain:
• Keep the cutters sharp at all times.
• Keep the left and the right cutters properly aligned.
• Note that blunt or irregular cutters will result in poor cutting performance,
increased vibration of chains and premature breakage of the saw chain.
50
Preset tie strap
Left hand cutter
Guard link
Top plate
Side plate
X7503256302
© 09/19 ECHO Incorporated
402S
Depth
gauge
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