I bought a older sears craftsman welder at a auction and have no idea what i have. The only thing I know is the lead is not right. It says that its a dual range, heavy duty, variable amp selection, 35-230 ac amp output..cant find a serial number or a model number any where on the unit. If anyone has info on this machine please let me know or where i can get parts and a manual for it. I have put a attachment on this of a picture of the machine.