Hesston 6600 Self-Propelled Windrower, Perkins 4-Cyl, Water-cooled Diesel Engine, Hydrostatic Drive Transmission, 14" Header, Steel On Rubber Crimper, 21.5L-16.1" Front Tires, 15" Rear Tires, Note: Left Hand Drive Motor Is Weak, SN: 660T-1580