The Yamaha TT-R125 is a capable recreational off-road motorcycle designed for beginner to intermediate riders, ideal for trail riding and general off-road enjoyment. Introduced as part of Yamaha's established TT-R lineage, this 2009 model offers a blend of reliability and user-friendly performance. It is available in variants such as the TT-R125E, featuring electric start, and the TT-R125L, which includes long-travel suspension for enhanced off-road capability. Powered by a 124 cc four-stroke, air-cooled engine with a 5-speed transmission, the TT-R125 is known for its accessible power delivery and robust construction, making it a popular choice in its class.

This comprehensive service repair manual provides detailed information for the maintenance, repair, and troubleshooting of the Yamaha TT-R125. It covers all major systems, including the engine, transmission, fuel system, electrical components, suspension, brakes, chassis, and wheels. The manual includes routine maintenance procedures, diagnostic guides for common issues, specific repair instructions, and essential technical data such as torque specifications and fluid recommendations. Its purpose is to assist owners, mechanics, and technicians in keeping the TT-R125 in optimal operating condition, ensuring its longevity and performance.