International Harvester produced its 686 farm tractor model From 1976 Until 1980 in United states with a Two-post fixed ROPS cabin and more than 6,000 units were build. Talking dimensions and weight, this model weighs 7770 lbs or 3524 kg has 89.4 inches [227 cm] of width, 162 inches [411 cm] of length while maintaining a wheelbase of 103 inches [261 cm] the front tread is about 58 to 82 inches while the rear tread is 56 to 96 inches . This tractor can fit ag tires of 7.50-16 front and 7.50-16 back . This International Harvester 686 is powerd by a diesel engine it has 291 ci or 4.8 L 6 cylinders the fuel tank capacity is 31 gal or 117.3 L. This machine has 4x2 2WD wheel drive system,10 forward and 2 reverse Torque Amplifier transmission system.