This workshop service manual covers the International Harvester B275 and B250 tractors, produced from the mid-1950s through the early 1960s. These utility tractors, powered by Perkins diesel engines (AD4.203 for the B275 and 3.152 for the B250), were designed for robust performance in agriculture and general farm work. Known for their dependable diesel power, versatile hydraulic systems, and straightforward maintenance, the B-series represented a significant advancement in compact and medium-duty farm machinery of their era, competing with other prominent brands like Fordson, Ferguson, and Massey Ferguson. Their design philosophy emphasized durable construction and reliability, making them a popular choice for farmers and smallholders.

This comprehensive English-language workshop service manual provides detailed guidance for the maintenance, troubleshooting, and repair of your International Harvester B275 or B250 tractor. It covers all essential systems, including the engine, transmission, hydraulics, electrical components, front axle and steering, rear axle and brakes, chassis, and power take-off (PTO). The manual includes step-by-step procedures for routine maintenance, component disassembly and assembly, adjustments, and overhauls. Detailed technical specifications, wiring diagrams, and diagnostic information are also provided, making this manual an invaluable resource for owners, mechanics, and technicians seeking to maintain the optimal performance and longevity of their tractor.