This manual covers the David Brown 850 / 950 Implematic tractor, a robust agricultural machine produced from the late 1950s through the 1960s. Known for its innovative Implematic system and Livedrive PTO, these tractors were designed for durability and efficient operation. The David Brown brand has a rich heritage in agricultural engineering, and the 850 and 950 models exemplify this legacy with their reliable diesel engines, advanced hydraulic systems, and sturdy chassis. This service repair workshop manual is an essential resource for maintaining the operational integrity and value of these classic tractors. The purpose of this comprehensive factory service repair workshop manual is to provide detailed information for the maintenance, repair, and troubleshooting of the David Brown 850 / 950 Implematic tractor. It covers all major systems, including the engine, Livedrive transmission, hydraulics, chassis, and electrical system, offering step-by-step instructions, diagnostic procedures, and detailed illustrations. This manual is designed for owners, operators, mechanics, and technicians, ensuring that all aspects of the tractor's functionality can be understood and addressed, from routine servicing to complete component overhauls.