Piston And Cylinder; Faults And Causes - Husqvarna 36 Workshop Manual

On saws 40 and 45, check the rubber sealing
on the shaft seat. Change the shaft seat, if
necessary.

Faults and causes

Score marks on the piston.
1. Incorrect carburettor setting max. speed
too high
2. Too low octane fuel.
3. Too little or incorrect oil in the fuel.
Carbon build-up
1. Incorrect carburettor setting max. speed
too low.
2. Too much or incorrect oil in the fuel.
Piston ring breakage
1. Excessive engine speed
2. Piston ring worn out.
3. Oversized piston ring groove.
110
– English

PISTON AND CYLINDER