This manual covers the 860 GT and 860 GTS models produced between 1975 and 1976. These Italian-designed motorcycles, a significant step for Ducati in larger displacement V-twin engines, feature an 860cc V-twin engine with Desmodromic valve actuation and a 5-speed sequential manual transmission, often paired with shaft drive. Engineered by Fabio Taglioni, these models represent a blend of classic design and robust mechanical engineering, intended for riders who appreciate performance and heritage. This comprehensive factory service and repair manual provides detailed instructions for all aspects of maintenance and repair. It includes step-by-step procedures for routine maintenance, in-depth repair guidance for all components, and extensive coverage of systems such as the fuel system, engine top end, clutch, lubrication, crankshaft, transmission, wheels, brakes, suspension, steering, frame, and electrical system. With hundreds of photos and illustrations, this manual is an invaluable resource for do-it-yourself enthusiasts and professional mechanics alike, enabling effective troubleshooting and ensuring the longevity of your 860 GT or 860 GTS.