Use and Care Manual

MAINTENANCE CS-4910
50 X7503314201
© 05/22 ECHO Incorporated
Spark Arrester Screen
Carbon deposits in muffler will cause drop in engine output and
overheating. Spark arrester screen must be checked periodically.
1. Remove air cleaner cover and
remove spark plug lead.
2. Remove spark arrester cover (A)
and screen (B) from muffler (C)
body.
3. Clean carbon deposits from
muffler components.
4. Replace screen if it is cracked, or
has holes burned through.
5. Assemble components in
reverse order.
Note: When cleaning carbon
deposits, be careful not to
damage the catalytic element inside muffler.
Setting the Saw Chain
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.
A
B
C
Top plate
Side plate
Depth
Left hand cutter
Preset tie strap
gauge
Guard link
Drive link
Tie strap
Right hand cutter