Author Topic: husqvarna 445 wont start  (Read 3719 times)

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Offline 3000 FPS

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Re: husqvarna 445 wont start
« Reply #10 on: June 05, 2017, 02:48:32 pm »
Anything that can cause the saw to run lean will cause the scoring on the piston and cylinder.    This is due to heat in a lean condition.

Crank seals can cause this.
A bad intake seal.
Bad gas.
Carburetor set too lean.
Carburetor going bad.

The scoring goes across the rings and drops compression.
Or like you mentioned a broken or stuck ring.
PP 505, 475, 445.

 

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