This manual covers the Allis-Chalmers Model 200 Tractor, a robust piece of agricultural equipment known for its reliability and utility. Allis-Chalmers, a manufacturer with a strong heritage in agricultural machinery, produced tractors designed for demanding work. The Model 200, likely manufactured in the latter half of the 20th century, embodies the brand's commitment to durable engineering, making it a valuable asset for various farming and operational tasks. Its design prioritizes functionality and longevity, ensuring it can handle the rigors of its intended use. This comprehensive service repair manual provides in-depth information for the Allis-Chalmers Model 200 Tractor. It covers essential areas including general maintenance, periodic lubrication, and detailed troubleshooting procedures. Owners, mechanics, and technicians will find step-by-step instructions for disassembly, assembly, repair, and adjustment of all major systems, such as the engine, fuel, cooling, electrical, transmission, brakes, steering, and hydraulic systems. The manual also includes technical specifications and detailed wiring diagrams, empowering users to maintain and repair their tractor effectively and efficiently.