The International Harvester McCormick B-275 Diesel is a robust tractor model produced primarily in the late 1950s and early 1960s. As part of the esteemed McCormick line, this utility tractor is recognized for its reliability and practical application in agricultural settings. Built with International Harvester's heritage of engineering quality, the B-275 Diesel was designed to be a dependable workhorse, offering essential functionality for its intended operators and owners. Its straightforward diesel engine and sturdy construction have made it a lasting presence in the agricultural machinery landscape. This shop repair manual provides comprehensive guidance for the International Harvester McCormick B275 Diesel Tractor. It covers a wide array of systems, including the diesel engine and fuel system, transmission with reversing gear, drivetrain, brakes, clutch, cooling system, electrical system, steering, hydraulics, power take-off, front system, and belt pulley. The manual details maintenance procedures, tune-ups, and in-depth service repair procedures, supported by detailed illustrations, exploded diagrams, and manufacturer specifications. It is an indispensable resource for owners, operators, and mechanics seeking to effectively maintain, troubleshoot, and repair their McCormick B275 Diesel tractor.