Chainsaw Repair

It depends on weather the piston is scored or scuffed .Scored most likely  is caused by a lean run condition and will transfer aluminum to the cylinder and the damage will be on the exhaust side .Scuffed is slight damage on the intake side and could be nothing but a faulty air cleaner ,Usually no transfer .

On a scuffed intake side unless it's real bad all it might take is a set of piston rings .Fact I have several that all it took was a little clean up with a 3M pad,rings and good to go .You can't tell them from a brand new one .Some it took a new piston .