Introducing the YZ125, a renowned lightweight motocross competition motorcycle that has been a dominant force in its class since its introduction. Known for its agile handling, potent 125cc two-stroke engine, and proven reliability in racing environments, the YZ125 has consistently been refined for peak performance. This particular manual covers models from 2006 onwards, offering detailed insights into a machine that has earned accolades in motorcycle media and achieved significant success in professional racing circuits, embodying a strong heritage in motorsports.

This comprehensive workshop service repair manual is designed to be an indispensable resource for owners and technicians alike. It meticulously details all aspects of the YZ125, from routine maintenance and pre-ride inspections to complete engine and suspension overhauls. Covered extensively are the engine's mechanical components, fuel and ignition systems, transmission, brakes, and suspension, including specific procedures for disassembly, assembly, and tuning. The manual also provides crucial technical specifications, diagnostic troubleshooting guides, and information on special tools, empowering users to maintain, repair, and optimize their YZ125 for maximum performance and longevity.