22
C o o l I n G s y s T e m
Level 2.
Tools required: 25 - 50mm (1 - 2 in.) cleaning brush, Cross Head
Screwdriver
Parts Required: None, if you are careful.
IMPORTANT
To maintain proper engine operating temperatures, cooling air must
pass freely through the cylinder n area. This ow of air carries com-
bustion 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 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 and engine cover (four screws), pull cover
away from engine.
2. Clean cylinder ns (A) to allow cooling air to pass freely.
3. Install engine cover and spark plug.
A
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