Cooling System; Exhaust System - Echo PB-460LN Operator's Manual

18
COOLING SYSTEMS CLEANING
Level 2.
Parts Required: None, if you are careful.
IMPORTANT
To maintain proper engine operating temperatures, cooling air
mustpass freely through the cylinder fi n area. This fl ow of air
carriescombustion 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 fi ns is
considered "Normal Maintenance." Any failure attributed to lack of
maintenance is not warranted.
Cleaning Grill
1. Remove accumulated debris from intake grill between backpack
frame and blower housing.
Cleaning Cylinder Fins
1. Remove spark plug cover and spark plug.
2. Remove engine cover (fi ve screws), pull cover away from engine,
and tie temporary knot in starter rope. Clean cylinder fi ns to allow
cooling air to pass freely.
IMPORTANT
Always reinstall spark plug cover, otherwise engine cooling will
be greatly reduced, and engine failure will result.
INTAKE
GRILL