I have an older craftsman chainsaw i went to start it and noticed it seemed to be locked up. I removed the spark plug to find the cyl was full of bar oil. I was just wondering how this can happen and how to fix it

mike owens, April 2008

This is an odd one...the bar oil and fuel tanks are separate things so its most unlikely that oil has leaked through here...however the bar oil pump is driven by the engine crankshaft, and if oil seals have gone in this it is possible that bar oil could leak into the crankcase. Its all that I can think of!

John, April 2008