The 1992 Yamaha YZ125 is a motocross motorcycle renowned for its performance-oriented design and a manufacturer's established reputation for reliable two-stroke engines. This model competed fiercely in the 125cc class, distinguishing itself with strong engine power delivery and agile chassis dynamics, making it a popular choice for racing enthusiasts. Key features include a liquid-cooled 124cc two-stroke engine, advanced suspension for its time, and a lightweight frame engineered for optimal handling on challenging off-road terrain.

This comprehensive factory service manual provides all essential information for the maintenance and repair of the 1992 Yamaha YZ125. It covers a wide range of topics, including detailed procedures for engine overhauls, fuel system adjustments, suspension servicing, brake system maintenance, and electrical troubleshooting. The manual is designed to assist owners, technicians, and mechanics in preserving the vehicle's performance and ensuring its longevity through accurate and thorough guidance.