The International Harvester 354 Tractor, produced primarily from the mid-to-late 1960s, represents a robust and reliable piece of agricultural machinery. As part of IH's esteemed '300' series, this utility tractor was engineered for a variety of tasks, featuring a diesel engine commonly around 154 cubic inches and delivering approximately 40-55 PTO horsepower. Its design emphasizes functionality and durability, with a constant mesh manual transmission offering typically 8 forward gears and reverse, an independent PTO, and a standard differential lock for enhanced traction. Manufactured in both the United States and the United Kingdom, the 354 Tractor embodies the strong heritage of International Harvester, offering a practical solution for farming and industrial needs of its era. This comprehensive Service and Repair Manual (SRM) provides essential information for the maintenance and repair of the International Harvester 354 Tractor. It covers all major systems, including detailed procedures for engine overhaul, fuel system servicing, cooling system maintenance, electrical system diagnostics, transmission and differential repair, brake system service, steering, and suspension. The manual also includes step-by-step instructions for disassembly and assembly, recalibration and adjustment procedures, and detailed technical specifications. Its purpose is to empower owners, operators, mechanics, and technicians with the knowledge required for effective troubleshooting, preventative maintenance, and in-depth repairs, ultimately ensuring the continued performance and longevity of the tractor.