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MAINTENANCE
PB-770 H/T
36
X7531125807
© 01/2020 ECHO Incorporated
Removal of cooling passage blockages or cleaning of cooling fins is
considered “Normal Maintenance.” Any failure attributed to lack of
maintenance is not warranted.
Cleaning Grill
1.
Brush accumulated debris from intake grill between backpack frame
and blower housing.
Cleaning Cylinder Fins
1.
Disconnect spark plug lead from
spark plug.
2.
Remove air filter cover.
3.
Remove engine cover.
4.
Clean cylinder fins (A) to allow
cooling air to pass freely.
5.
Install engine cover.
6.
Install air filter cover.
7.
Connect spark plug lead.
Exhaust System
Spark Arrestor Screen
Level 2.
Carbon deposits in muffler will cause a drop in engine output and
overheating. Spark arrestor screen must be checked periodically.
Parts Required:
Spark Arrestor Screen, Gasket
A