This workshop service repair manual covers the Massey Ferguson MF 400 Series Tractors, including models MF 415, MF 425, MF 435, MF 440, MF 445, MF 460, MF 465, and MF 475. Massey Ferguson is a respected brand known for robust and reliable agricultural machinery. The MF 400 Series tractors are designed for versatility and economy in various agricultural applications. This manual provides factory-authorized, comprehensive information equivalent to that used in official service shops, enabling owners and mechanics to perform repairs and maintenance effectively. This manual is designed to assist with the service, maintenance, troubleshooting, and repair of the MF 400 Series tractors. It covers essential systems including Perkins engines (A 3.152, A 4.236, P4000, 1000 Series), various transmission types (8x2 and 12x4 speeds with different gear mechanisms), 2WD and 4WD front axles, clutch, rear axle, Ferguson Lifting System, PTO/IPTO, and the electrical system. With hundreds of detailed diagrams, illustrations, and step-by-step instructions, this manual offers professional-level guidance for all aspects of tractor upkeep and repair, ensuring optimal performance and longevity.