The Yamaha YZ250(S)/LC, produced in 2004, is a performance motocross motorcycle engineered for demanding off-road competition. It features a robust 2-stroke, liquid-cooled engine with reed valve induction, paired with an aluminum semi-double cradle frame for exceptional handling. Notable for its advanced suspension, including a fully adjustable KYB Speed Sensitive System (SSS) cartridge fork and a KYB Monoshock rear system, this model offers superior control and stability over challenging terrain. Its powerful hydraulic disc brakes front and rear ensure reliable stopping power, contributing to its reputation for performance and durability in the competitive motocross landscape.

This Service Repair Manual provides comprehensive guidance for the Yamaha YZ250(S)/LC. It covers all essential systems, including the engine, transmission, chassis, suspension, electrical, fuel, cooling, and braking systems. Detailed procedures for maintenance, troubleshooting, and repair are included, along with critical technical specifications and torque values. This manual is an indispensable resource for owners, mechanics, and technicians seeking to maintain, diagnose, and repair the vehicle, ensuring optimal performance and longevity.