This workshop service repair manual covers the Triumph TR25W models produced between 1968 and 1970. The TR25W, manufactured by the historic British motorcycle company Triumph Engineering Co. Ltd., is a vertical twin-cylinder, four-stroke motorcycle known for its relatively compact and lightweight design, aimed at the enthusiast market. With a displacement of 249 cc and an output of approximately 17-20 bhp, it offered a blend of performance and usability for its era, featuring a 4-speed constant mesh manual transmission and chain drive.

This comprehensive English-language manual provides detailed factory-level information essential for the maintenance, repair, and troubleshooting of your Triumph TR25W. It covers all major systems, including engine overhaul, fuel and ignition systems, transmission, suspension, braking, and electrical components. Step-by-step procedures for routine servicing, diagnostics, and component rebuilds are clearly outlined, making this manual an invaluable resource for owners, mechanics, and restoration specialists seeking to preserve the integrity and performance of their vintage Triumph motorcycle.