In Reply to: serial number posted by Stan Rowe on June 26, 2019 at 21:15:38:
I don't think that is the serial number. More likely a casting number. If it is an NAA, the serial number should start with NAA. If it is a hundred series, I think it starts with the model, ie 6XX. The serial number should be just forward of the starter on the housing. Got any pictures of the tractor?