I thought they sent them back to the manufacturer. I never thought they would put a broken returned item back on the shelf. I know better now. I would not put a ten year old, worn out item in a new box and try to pass it off as new. I wouldn't even bother returning an item for warranty if I could fix it myself for a reasonable cost; I have fixed several grinders that were purchased new online with an $8 gear. I would rather do that than ship them back under warranty.The woman I bought this from, said it had maybe five hours on it and it looks like it. She lost the box with the missing parts and reciept during a move, that's why she sold it cheap. I only had the thought of returning it when I heard there was a critical part that could go bad and was discontinued. Sorry if I came across as some sort of crook or scam artist, I can assure you I am not. I have had guys in the neighborhood come buy offering to get me brand new tools to order, new in the box, out the back door of the store and delivered to me. I refused, because I don't want to encourage theft. I have been a member of this on-line community a long time, and I hope no one thinks I am some sort of criminal.