The serial number for a Massey Ferguson 283 tractor can usually be found in one of two places. The first place is on the firewall of the tractor, usually just to the left of the windshield. It can also be found on a placard or sheet metal tag affixed to the chassis of the tractor. The placard or sheet metal tag is usually located on the footrest support or on the side of the engine compartment. It is important to note that the serial number can vary in length, but most often it will have six digits.