The TTR125 is a versatile and reliable four-stroke off-road motorcycle designed for recreational use and novice to intermediate riders. Introduced to offer an accessible entry into the world of dirt biking, this model has been produced across various iterations since 1999, including variants like the TTR125E and TTR125L, which may feature electric start or enhanced suspension. Known for its user-friendly operation, durable construction, and the reputable engineering legacy of off-road division, the TTR125 provides a balanced blend of performance and ease of maintenance, making it a popular choice for young riders and casual trail enthusiasts. Its design philosophy prioritizes durability and a forgiving power delivery, ensuring a positive riding experience.

This comprehensive service and repair manual in English covers TTR125 models from 1999 through 2006. It is meticulously organized to assist owners, technicians, and mechanics in maintaining and repairing the vehicle. The manual delves into all critical systems, including detailed engine service procedures, transmission overhauls, chassis and suspension maintenance, brake system servicing, and electrical system diagnostics. Furthermore, it provides essential information on routine maintenance schedules, troubleshooting common issues, component rebuilds, and identifies any special tools required for specific tasks. With high-resolution diagrams and clear instructions, this manual serves as an indispensable resource for ensuring the TTR125 remains in optimal condition.