Stihl 025 for sale. I removed the muffler and the piston does have scoring but engine is not locked up. Appears to be mostly complete but noticed that it is missing the air filter, one bar nut and possibly the fuel tank vent. Again This is from about 2 minutes of me quickly scanning the saw for any missing pieces. Trades? Sure. Chainsaw related, tool related, chainsaw memoribillia, good 5" orbital sander?? Whatever...