My saw that I just rebuilt last sept. Had the piston fail. A lot of you guys walked me through how to fix it at that time. Ive cut a couple of cords with it and it ran great. In hindsight, it did get harder to start about a month ago. The last time i used it, i set it down to gas it up and it wouldnt restart. After trying different things i put a compression tester on it. 30 psi. . I pulled the cylinder and the exhaust side off it has scuff marks and the piston is ground up on that side only. I certainly thought id get more use out of it than that. What do you think caused the failure?
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