This manual covers the Triumph 350/500 series motorcycles, produced around 1969. These British-engineered parallel-twin, air-cooled machines, available in approximately 349cc and 490cc displacements, are renowned for their classic styling and robust performance. Variations in engine codes such as 3TA, 5TA, T100R, and T100C reflect the evolution and specific configurations of these iconic models. Designed for riders and enthusiasts who appreciate the heritage and mechanical character of vintage motorcycles, the Triumph 350/500 offers a rewarding ownership experience, blending historical significance with reliable, engaging performance.

This comprehensive English-language service manual provides detailed guidance for the maintenance, repair, and restoration of your Triumph 350/500 motorcycle. It covers all essential systems, including the engine, transmission, chassis, electrical components, fuel system, and brakes. With step-by-step instructions, diagnostic charts, and technical specifications, this manual is an indispensable resource for owners and technicians alike. Whether performing routine servicing, addressing common issues like carburetor flooding or oil leaks, or undertaking a full engine or gearbox overhaul, this manual equips you with the knowledge to keep your classic Triumph in peak condition.