My cousin has an older Stihl 039 chainsaw ser # 231608771 that burned up the cylinder and piston , maybe more.
The oil mix was correct according to him. He bought this saw new but let his grandson use it to cut firewood. He left mixed gas with it when he loaned it out. Grandson used the gas granddad brought and this gas mix has been used in his other saw and no issues.
Now the problem is would this 039 be worth replacing the cylinder and piston or get a rebuilt unit off ebay ? I told him I would think long before I ordered just a cylinder and piston. I viewed this chainsaw yesterday and it is indeed toast. Anyone had any luck buying a compete engine assembly ? Suggestions welcomed.