The International Harvester 786 Tractor, produced approximately between 1976 and 1981, is a robust agricultural machine known for its reliability and performance. As part of the IH 86 series, it offered improvements in operator comfort and drivetrain efficiency over its predecessors, making it a versatile tool for farm operations. This tractor typically features a diesel engine with around 70-80 PTO horsepower and a synchronized T-154 transmission, designed for durability and effective power delivery. Its legacy is built upon International Harvester's reputation for manufacturing dependable agricultural equipment, with the 786 being a significant model in the utility tractor segment of its time. This comprehensive workshop service manual provides detailed information essential for the maintenance, repair, and overhaul of the International Harvester 786 Tractor. It covers all major systems, including the engine, transmission, electrical, hydraulic, PTO, axles, brakes, and steering, offering step-by-step instructions, diagnostic procedures, and technical specifications. The manual is designed for professional technicians and experienced mechanics, enabling them to perform everything from routine maintenance, such as fluid changes and component checks, to complete overhauls. With hundreds of pages of original documentation, including wiring diagrams and torque specifications, this manual is an indispensable resource for keeping the 786 tractor in optimal working condition and significantly reducing repair costs.