The International Harvester 826 is an agricultural tractor, representing a significant model in the manufacturer's lineage. This robust machine was engineered for demanding tasks, embodying the quality and reliability characteristic of International Harvester. Its design and capabilities make it a versatile tool for various farming operations, built to withstand rigorous use and provide dependable performance. This workshop repair service manual provides comprehensive coverage for all International Harvester 826 models, engines, and transmissions. It details maintenance procedures, diagnostic steps, and repair instructions for all major systems, including the engine, fuel systems (Diesel and LP-Gas), cooling, transmission, torque amplifier, final drive, differential, brakes, steering, hydraulics, power take-off, and belt pulley systems. The manual also includes electrical system service, wiring diagrams, and safety precautions, offering professional-level guidance for owners and technicians to maintain and repair the tractor effectively.