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110 – English
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.
PISTON AND CYLINDER
Piston ring breakage
1. Excessive engine speed
2. Piston ring worn out.
3. Oversized piston ring groove.
Carbon build-up
1. Incorrect carburettor setting max. speed
too low.
2. Too much or incorrect oil in the fuel.
On saws 40 and 45, check the rubber sealing
on the shaft seat. Change the shaft seat, if
necessary.
Eng, p 83-124 96-09-13, 11.16110