The David Brown 1594 is a heavy-duty agricultural tractor produced from the late 1970s to the mid-1980s. As part of the modernized '94 Series', this robust machine was manufactured in Meltham, England, and positioned to compete with established brands like Massey Ferguson and John Deere. It features a powerful diesel engine, typically producing between 70-90 HP, with significant torque for demanding farm work. Transmission options include a manual Synchro-Shuttle or Speed-Shift, with an optional Powershift unit available, alongside live or independent PTO capabilities. The tractor is equipped with a Category II three-point linkage and advanced hydraulics for its era, emphasizing reliable performance and durability for agricultural applications. This comprehensive service and repair manual is designed to provide detailed guidance for the David Brown 1594 tractor. It covers all essential aspects of maintenance, troubleshooting, diagnostics, and repair, including in-depth information on the engine, transmission, hydraulics, electrical systems, and chassis. The manual offers step-by-step procedures for disassembly, overhaul, and adjustment of all major components. With its structured organization and detailed content, this manual serves as an indispensable resource for owners, mechanics, and technicians aiming to maintain the optimal performance and longevity of their David Brown 1594 tractor.