The Yamaha QT50, also known by its model nickname Yamaha QT50M and chassis code QT50, is a 2-stroke scooter produced from 1979 to 1992. Designed for urban commuting and recreational use, this lightweight, fuel-efficient vehicle features an automatic Continuously Variable Transmission (CVT), a simple and reliable 49.2 cc engine, and iconic styling from its era. Its engineering prioritizes ease of operation and maintenance, making it a popular choice for riders seeking economical transportation.

This repair service manual provides comprehensive guidance for owners and technicians working on the Yamaha QT50 models from 1979 through 1992. It covers all essential aspects of the vehicle, including detailed procedures for engine mechanicals, fuel and ignition systems, electrical components, transmission, chassis, brakes, and bodywork. The manual also includes scheduled maintenance, troubleshooting diagnostics, and step-by-step repair instructions, ensuring the longevity and optimal performance of your scooter.