The International Harvester 444 tractor, produced from the mid-1960s to the early 1970s, represents a robust and versatile addition to the agricultural machinery landscape. As part of the esteemed IH '44' series, this model is recognized for its reliability and durability, making it a dependable workhorse for various farming and industrial tasks. Featuring an International Harvester BD Series Diesel engine, typically with 3 or 4 cylinders, and a constant mesh gearbox offering multiple forward and reverse gears, the 444 is engineered for efficient operation. Its design prioritizes functionality and ease of maintenance, embodying the quality and engineering prowess that defined International Harvester's legacy in the agricultural sector. This Workshop Service Manual (WSM) provides comprehensive guidance for the International Harvester Tractor 444, covering essential service, repair, and maintenance procedures. It is meticulously designed to assist tractor owners, mechanics, and agricultural workshops in maintaining the optimal performance and longevity of their equipment. The manual delves into detailed information on all major systems, including the engine, transmission, hydraulics, and electrical system, offering step-by-step instructions for diagnostics, troubleshooting, repair, and overhaul. With clear illustrations and in-depth technical specifications, this manual empowers users to perform necessary tasks efficiently, ensuring the tractor remains in peak operating condition and saving significant costs compared to professional servicing.