The Cletrac FD is an agricultural crawler tractor produced by Cletrac from 1936 to 1944 in Cleveland, Ohio, USA. It features a Hercules 11.6L 6-cylinder liquid-cooled diesel engine with an estimated 88.9 hp. The tractor offers 3-speed and 4-speed gear transmission options with dry clutches. It has a crawler drive with 20-inch wide tracks and an open operator station. The FD model has a drawbar power of 60 hp claimed and 91.16 hp tested, with belt power of 80 hp claimed and 107.25 hp tested. Dimensions include a length of 173 inches, width of 94.5 inches, height of 84 inches, and weight of 25,800 lbs. The tractor was available in gasoline (FG) and diesel (FD) variants.