Introduction Each section will be identified with a symbol, letter or a number. All information, illustrations and specifications in this manual are based on the latest information available at the time of publication. The right is reserved to make changes at any time without notice. COPYRIGHT© 1993 JOHN DEERE HORICON WORKS Horicon, Wisconsin All rights reserved AllTractorManuals.com Safety S Specifications and General Information G 3TN66, 3TNA72 (3009) 1 3TN75, 3TN78, 3TNC78 (3011), 3TN82, 3TNA82, 3TN84 (3014) 2 4TN78T, 4TN82, 4TN84(T) (4019) 3 4TN100 4 Accessories - Series 220 Power Unit Engines 1 Engine, Air Intake and Fuel System 2 Electrical System - Series 220 Power Unit Engines 2