This manual covers the T135, a popular underbone motorcycle produced from 2005 onwards. Known for its sporty performance, fuel efficiency, and reliability, the T135 is a favored choice in Asian markets, often recognized for its practical design and robust engineering. Its four-stroke, SOHC, 2-valve engine, typically around 135 cc, is paired with a 4-speed semi-automatic transmission, offering a balance of power and ease of use for everyday commuting and recreational riding. The motorcycle features a steel diamond frame for durability, a hydraulic disc front brake, and a drum rear brake, ensuring dependable stopping power. This comprehensive workshop service and repair manual provides in-depth information for owners and technicians. It details all aspects of the T135, including engine overhaul, fuel and ignition systems, chassis components, electrical systems, and bodywork. The manual includes essential maintenance schedules, step-by-step repair procedures, diagnostic guides, and detailed technical specifications. With factory-level information, this resource empowers users to perform accurate maintenance and repairs, ensuring the longevity and optimal performance of their T135.