1981 John Deere 8640 4WD Tractor, 45 Hrs Showing, 275 Hp, John Deere 10.1L Turbocharged Diesel Engine, John Deere Partial Powershift, 16 Forward Speeds, 4 Reverse Speeds, (3) Pair Auxiliary Hydraulics, Differential Lock, Articulated Steering, Heater, AC, Radio, 18.4-38 Front Tires, 18.4-38 Rear Tires, Front And Rear Duals, NOTE: AC/Heater Fan Not Operational, Had To Be Jump Started, Would Not Shift To Park But Will Shift Through Gears, SN: 8640H007923RW