This manual covers the 125 EXC, SX, MXC, EGS, and LC2 models, as well as the 200 EXC, SX, MXC, and EGS variants produced between 1999 and 2003. These off-road motorcycles are powered by robust single-cylinder, two-stroke engines, known for their strong power-to-weight ratios and competitive performance in their respective classes. The legacy in off-road racing is evident in the design and engineering of these agile and durable machines, which are equipped with liquid-cooled engines, 6-speed transmissions, and hydraulic disc brakes.

This comprehensive English-language service manual provides detailed guidance for owners, independent repair shops, and experienced DIY mechanics. It covers a wide range of essential maintenance procedures, from routine checks and component replacements to complete engine rebuilds and troubleshooting. The manual includes in-depth information on engine mechanicals, cooling and lubrication systems, ignition and fuel systems, exhaust systems, torque specifications, and specialized tools. Its detail level is comparable to factory service manuals, ensuring professional-level repair and maintenance capabilities.