This workshop service repair manual covers International Harvester Farmall 100, 130, 140, 200, 230, 240, 404, and 2404 tractors, encompassing all engine and transmission types, and all trim levels. Produced primarily from the mid-1950s through the early 1970s, these tractors are part of the iconic Farmall lineage, renowned for their versatility and durability in agricultural applications. International Harvester's legacy in agricultural machinery is significant, and these models represent a key part of that history, offering robust performance for farm owners, collectors, and restoration enthusiasts. This comprehensive manual provides detailed information essential for maintaining and repairing your International Harvester tractor. It includes step-by-step instructions for regular maintenance, troubleshooting common and uncommon issues, and complete overhaul procedures for major systems such as the engine, transmission, and hydraulics. Coverage extends to the electrical system, fuel system, cooling, braking, steering, power take-off, rear and front axles, chassis, and body components. With clear diagrams and technical specifications, this manual is an indispensable resource for farm owners and mechanics seeking to ensure the longevity and optimal performance of their Farmall tractors.