This manual covers the Massey Ferguson 255, 265, 275, 270, and 290 tractor models, representing a robust and versatile line of agricultural machinery. Known for their reliability and workhorse capabilities, these tractors have been a staple in the agricultural sector, likely produced from the late 1970s through the 1980s. Massey Ferguson, a manufacturer with a rich heritage in tractor design, engineered these models to be durable and effective in various farming applications. This comprehensive service repair manual provides factory-level technical detail for all styles of these dependable tractors. The purpose of this manual is to provide owners and professional technicians with the necessary information to maintain, repair, and troubleshoot their Massey Ferguson tractors. It includes fundamental maintenance procedures, step-by-step repair guidance, advanced troubleshooting, detailed diagnostic procedures for all systems, and complete rebuild or refurbishment instructions. Key areas covered include engine systems, cooling, fuel, power train, electrical systems, brakes, hydraulic systems, steering, and power take-off. With hundreds of pages of detailed illustrations, diagrams, schematics, and numbered instructions, this manual is an essential resource for ensuring the longevity and optimal performance of your tractor, potentially saving significant labor costs.