Use and Care Manual

EB770RT MAINTENANCE
X7531127000 31
© 10/19 ECHO Incorporated
Cooling System
Level 2.
To maintain proper engine operating temperatures, cooling air must
pass freely through the cylinder fin area. This flow of air carries
combustion heat away from the engine.
Overheating and engine seizure can
occur when:
• Air intakes are blocked, preventing
cooling air from reaching the
cylinder.
• Dust and grass build up on the
outside of the cylinder. This build
up insulates the engine and
prevents the heat from leaving.
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.