The TZR 125, produced between 1987 and 1993, represents a significant entry in the sportbike segment, embodying a commitment to performance and engineering. This first-generation model, identified by its 2RH engine code, features a potent two-stroke, liquid-cooled, single-cylinder engine with a displacement of 124.7 cc, delivering approximately 25-30 horsepower. Its design prioritizes agility and a sporty riding experience, incorporating a 6-speed transmission, wet multi-plate clutch, and chain final drive. The TZR 125 is recognized for its advanced technology for its time, including reed valve induction and an autolube system, making it a capable and engaging machine for enthusiasts. This comprehensive workshop service repair manual provides extensive information for the TZR 125, covering all variants from 1987 to 1993. It is meticulously designed to assist both do-it-yourself enthusiasts and experienced mechanics in maintaining and repairing the vehicle. The manual details procedures for engine mechanical and electrical systems, fuel and emission control, suspension, clutch, transmission, brakes, and bodywork, including electrical components. With step-by-step instructions, detailed illustrations, wiring diagrams, and troubleshooting guidance, this high-quality, authoritative resource ensures proper upkeep and operational integrity of your TZR 125.