This manual covers the T135S, a popular underbone motorcycle model produced from 2005 onward. Renowned for its blend of sporty performance and everyday practicality, the T135 series embodies a commitment to engineering quality and reliability in the powersports segment. Its compact, liquid-cooled, four-stroke engine, typically around 135cc, delivers efficient power suitable for commuting and general riding. The model features a 4-speed rotary transmission with an automatic centrifugal clutch and a chain final drive, contributing to its user-friendly operation. This comprehensive workshop repair manual provides complete service and repair information for the T135S. It details routine maintenance procedures, diagnostic troubleshooting, and in-depth repair instructions for all major systems, including the engine, transmission, electrical components, chassis, and braking system. With step-by-step guidance, detailed diagrams, and clear explanations, this manual is an essential resource for DIY enthusiasts, independent repair shops, and technicians looking to maintain and restore the T135S to optimal condition.