The International Harvester 21256 Tractor, likely produced in the late 1970s to early 1980s, represents a robust piece of agricultural machinery. Known for its strong diesel engines, versatile hydraulic systems, and durable construction, this tractor was designed for utility work, general farming, property maintenance, and light construction. It competed effectively within its segment, offering reliable performance and a practical approach to demanding tasks, a hallmark of International Harvester's legacy in the agricultural equipment market.

This comprehensive manual serves as an essential resource for maintaining and repairing the International Harvester 21256 Tractor. It covers a wide array of systems, including detailed procedures for engine, transmission, hydraulics, steering, brakes, electrical components, chassis, and bodywork. The manual provides step-by-step instructions for routine maintenance, troubleshooting, component overhaul, and parts identification, ensuring owners and technicians have the necessary information to keep the tractor in optimal working condition and prolong its service life.