I have a gas powered "cub cadet" branded chipper in the cellar that was used for five minutes, when brand new from my father in law,. put back in the cellar and never used again, Still like brand new. I don't think there is a mark on the machine, to this day. Probably should sell it as I haven't used it and know that I never will. Even though it was part of the inventory when we bought this place,