This service repair manual covers the International Harvester 424 Tractor, a robust and reliable machine from a historic American manufacturer. Produced likely from the mid-1960s to the early 1970s, the 424 was designed to bridge the gap between utility and row-crop tractors, offering dependable performance for farm owners and DIY enthusiasts. Its engineering emphasizes durability and straightforward operation, making it a valuable asset for a wide range of agricultural tasks. This manual provides comprehensive coverage for all styles of the IH International Harvester 424 Tractor. The purpose of this factory service repair workshop manual is to provide detailed guidance for the maintenance, repair, and troubleshooting of your International Harvester 424 Tractor. It includes hundreds of pages of information covering complete engine overhaul, fuel system, cooling system, electrical system, transmission, drivetrain, braking system, steering system, and hydraulic system. With step-by-step instructions, diagnostic procedures, and information on routine maintenance and known issues, this manual is an essential resource for owners, mechanics, and technicians seeking to maintain the operational integrity and longevity of their tractor.