This manual covers the International Harvester 2424 and 2444 tractors, known for their robustness and significant role in agricultural mechanization. These tractors, produced primarily during the 1960s and 1970s, represent a lineage of durable and versatile farm machinery from International Harvester. This factory service repair manual provides comprehensive coverage for all styles of these models, offering detailed procedures and specifications essential for maintaining their operational integrity and longevity. The purpose of this manual is to serve as a complete guide for owners, operators, mechanics, and restorers. It details routine maintenance, fluid specifications, and extensive repair procedures for all major systems, including the engine, fuel, electrical, drivetrain, braking, steering, and hydraulic systems. With step-by-step instructions, detailed illustrations, and advanced troubleshooting guides, this resource empowers users to effectively diagnose issues, perform necessary repairs, and ensure the continued reliable performance of their International Harvester 2424 or 2444 tractor.