I picked this up from CL a few months ago for a few bucks. It was listed "parts saw". The guy said he lent it to his buddy and now it don't run. I was hoping it would be something simple like a carb problem, but when I pulled on the starter rope I knew the piston was shot, no compression. When I removed the cylinder it was clear why their was no compression, piston was very scored. I did the muratic acid cleanup to the cylinder and was able to restore it to good condition. A new OEM piston and ring kit was only $14 from Baileys. It also needed a few parts for the chain break. I also replaced the bar and chain. I tried running it last month, it would start OK but bog and stall when cutting. Yesterday I replaced the fuel line and filter and that cured the problem. I ran about half a tank of gas through it cutting up some odd ball wood, seemed to work well. Another one saved from the scrap heap. And another to add to the collection.