This manual covers the Oliver Super Series tractors, including models such as the Super 55, Super 66, Super 77, Super 88, and Super 99, as well as the 660 Fleetline Series. Produced primarily from the early to mid-1950s for the Super Series and late 1950s to early 1960s for the 660 Fleetline, these tractors are renowned for their robust construction, powerful engines, and enduring reliability. Oliver tractors of this era represent a significant contribution to agricultural mechanization, offering versatility and durability that continues to be valued by owners, mechanics, and restoration specialists. The engineering quality of these machines ensures their operational longevity when properly maintained. The OLIVER Master Shop Manual Super Series + 660 FLEETLINE is a comprehensive 1260-page guide designed to assist owners, mechanics, and technicians in maintaining and repairing these vintage Oliver tractors. This service manual provides detailed instructions for a wide range of systems, including engine overhaul, transmission repair, hydraulic system diagnostics, electrical troubleshooting, and chassis maintenance. It covers routine servicing, in-depth repair procedures, adjustment specifications, and the identification of special tools. The manual's purpose is to offer factory-level technical information, enabling users to keep their Oliver tractors in optimal working condition and preserve their historical significance.