The Yamaha YZ125, a celebrated motocross machine from 1987, represents a significant era in off-road competition. Known for its agile handling and potent 123cc liquid-cooled two-stroke engine featuring the Yamaha Power Valve System (YPVS), this model was a formidable competitor in its class. Its design prioritizes performance and rider engagement, embodying Yamaha's long-standing heritage in the demanding world of motocross. The engineering quality of the 1987 YZ125 contributed to its reputation for durability and competitive edge on the track.

This comprehensive service manual / repair manual in English provides detailed guidance for the maintenance, repair, and rebuilding of your 1987 Yamaha YZ125. It covers all essential systems, including the engine, cooling, fuel, ignition, transmission, suspension, brakes, and electrical components, along with chassis and bodywork. The manual offers step-by-step procedures, troubleshooting advice, torque specifications, and wiring diagrams, making it an indispensable resource for owners and technicians aiming to preserve the performance and longevity of this iconic dirt bike.

The Yamaha YZ125, a celebrated motocross machine from 1987, represents a significant era in off-road competition. Known for its agile handling and potent 123cc liquid-cooled two-stroke engine featuring the Yamaha Power Valve System (YPVS), this model was a formidable competitor in its class. Its design prioritizes performance and rider engagement, embodying Yamaha's long-standing heritage in the demanding world of motocross. The engineering quality of the 1987 YZ125 contributed to its reputation for durability and competitive edge on the track.

This comprehensive service manual / repair manual in English provides detailed guidance for the maintenance, repair, and rebuilding of your 1987 Yamaha YZ125. It covers all essential systems, including the engine, cooling, fuel, ignition, transmission, suspension, brakes, and electrical components, along with chassis and bodywork. The manual offers step-by-step procedures, troubleshooting advice, torque specifications, and wiring diagrams, making it an indispensable resource for owners and technicians aiming to preserve the performance and longevity of this iconic dirt bike.