Sawmill and Timber

Chainsaws and light support equipment => Chain Saws => Topic started by: bandmiller2 on April 08, 2016, 07:36:19 PM

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Title: Sucking wind
Post by: bandmiller2 on April 08, 2016, 07:36:19 PM
Guys whats the indication a chainsaw is sucking air by the seals.?? Frank C.
Title: Re: Sucking wind
Post by: John B on April 08, 2016, 08:02:45 PM
The first sign of failing crank seals is having to keep re adjusting the carburetor.

Title: Re: Sucking wind
Post by: John B on April 08, 2016, 08:11:09 PM
Assuming that the saw is not ancient, the most common cause of crank seal failure is freezing the bar and then gassing the saw to try to get the chain moving again. It only takes a few seconds of the clutch slipping at full throttle to heat the crank and melt the clutch side seal.

This is why some people say to never cut ice with a chainsaw. They may not even realize what happened, but you can melt a crank seal in 5-10 seconds trying to free an iced up bar and chain. I learned this one the hard way. ::) ::)
Title: Re: Sucking wind
Post by: bandmiller2 on April 09, 2016, 05:36:56 AM
Thanks John that's just what I suspected. Frank C.