This manual covers the TZR 125 and DT 125R models produced between 1987 and 2002. These motorcycles, powered by a 2-stroke, liquid-cooled, single-cylinder engine, represent a commitment to performance and versatility. The TZR 125 is recognized for its sporty capabilities, often featuring the Power Valve System for enhanced power delivery, while the DT 125R is an iconic dual-sport machine celebrated for its off-road prowess and adaptability. Both models have garnered popularity and enthusiast followings throughout their production lifespan, reflecting an established reputation for engineering quality and reliability in the motorcycle industry.

This comprehensive Service Repair Manual provides essential technical information for the maintenance, repair, and diagnostics of your TZR 125 or DT 125R. It details procedures for all major systems, including the bodywork, braking system, cooling system, electrical system, exhaust, fuel system, clutch, suspension, and wheels. The manual includes detailed engine mechanical procedures, fuel system tuning, electrical system diagnostics, and component replacement guides. With 159 pages of English content, it is designed to empower owners and technicians to perform a wide range of servicing tasks accurately, from routine maintenance to in-depth repairs, ensuring the longevity and optimal performance of these classic motorcycles.