The International Harvester B-250 Tractor, a robust machine produced primarily in the 1950s, represents a significant piece of agricultural engineering from a manufacturer renowned for its durable and utilitarian equipment. As part of IH's established line of tractors, the B-250 embodies a common and reliable design for its era, built to handle a variety of tasks. Its diesel engine and manual transmission, coupled with a comprehensive hydraulic system, make it a capable workhorse for farm and industrial applications. The B-250's heritage is rooted in International Harvester's long history of providing essential machinery, earning industry recognition for its dependability and practical utility. This workshop repair service manual provides comprehensive, professional-grade technical information for the International Harvester B-250 Tractor. Covering all models, engines, trims, and transmission types, this manual offers hundreds of pages of detailed content, including extensive troubleshooting guides, disassembly and servicing procedures, and clear illustrations. It is designed to assist owners, operators, and mechanics in performing routine maintenance, advanced diagnostics, and general repairs, enabling DIY service that can significantly reduce costs compared to professional shop labor. The manual includes in-depth coverage of all major systems, such as the engine, lubrication, cooling, fuel, clutch, transmission, rear axle, brakes, steering, and electrical systems, complete with wiring diagrams.