1983 John Deere Turbo 6620 2WD Combine, 3,866 Engine Hours Showing, John Deere 7.6L Diesel, 4-Speed Hydrostatic Transmission, Manual Concave Adjustment, Manual Sieve And Chaffer Adjustment, Rotary Chopper, 2WD, 24.5-32 Front Tires, 11.2-24 Rear Tires, SN: 552141