The 1985 RZ350 is a celebrated performance sportbike, known for its liquid-cooled parallel-twin two-stroke engine and the innovative Y.P.V.S. (Yamaha Power Valve System), which significantly enhanced its power delivery across the rev range. This model represents a peak in two-stroke engineering, offering a thrilling riding experience and advanced chassis design for its time, making it a sought-after machine for enthusiasts. Its legacy is built on a potent combination of speed, agility, and the distinctive character of its potent 347 cc engine.

This comprehensive factory service repair manual provides detailed information to maintain and repair the 1985 RZ350 (chassis and engine code 4U0). It covers all major systems, including engine top and bottom ends, fuel, ignition, exhaust, transmission, clutch, and chassis components such as suspension, steering, and brakes. The manual includes essential maintenance procedures, step-by-step repair instructions, troubleshooting guides with diagnostic charts, and critical technical specifications, ensuring owners and technicians can preserve the performance and longevity of this iconic motorcycle.

The 1985 RZ350 is a celebrated performance sportbike, known for its liquid-cooled parallel-twin two-stroke engine and the innovative Y.P.V.S. (Yamaha Power Valve System), which significantly enhanced its power delivery across the rev range. This model represents a peak in two-stroke engineering, offering a thrilling riding experience and advanced chassis design for its time, making it a sought-after machine for enthusiasts. Its legacy is built on a potent combination of speed, agility, and the distinctive character of its potent 347 cc engine.

This comprehensive factory service repair manual provides detailed information to maintain and repair the 1985 RZ350 (chassis and engine code 4U0). It covers all major systems, including engine top and bottom ends, fuel, ignition, exhaust, transmission, clutch, and chassis components such as suspension, steering, and brakes. The manual includes essential maintenance procedures, step-by-step repair instructions, troubleshooting guides with diagnostic charts, and critical technical specifications, ensuring owners and technicians can preserve the performance and longevity of this iconic motorcycle.