Echo CS-4920 User Manual

CS-4920 MAINTENANCE
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© 09/2022 ECHO Incorporated
Check with your local or state authorities for specific regulations in your
area. Failure to follow these requirements is a violation of the law.
Spark Arrester Screen
Carbon deposits in muffler will cause drop in engine output and
overheating. Spark arrester screen must be checked periodically.
1. Remove the clutch cover and
pull the front hand guard
backwards.
2. Remove the spark arrester
screen bolt (A) and remove the
screen (B) from the silencer
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 deposit, be careful, do not damage
the catalytic element inside muffler.
Carburetor Adjustment
Every unit is run at the factory and
the carburetor is set in compliance
with Emission Regulations. In
addition, the carburetor is equipped
with “H” (High Speed) and “L” (Low
Speed) needle adjustment limiters
that prevent settings outside
acceptable limits.
A
B
L
T
H

Echo CS-4920 Specifications

General

Brand	Echo
Model	CS-4920
Category	Chainsaw
Language	English