This manual covers the Yamaha WR250F, a competition enduro/off-road motorcycle produced in 2001. Engineered for demanding off-road use, the WR250F features a liquid-cooled, 4-stroke, DOHC, 5-valve single-cylinder engine displacing 249cc, paired with a 5-speed constant mesh transmission. Its advanced chassis is built around an aluminum perimeter frame, complemented by high-performance KYB AOS-II front forks and a fully adjustable rear monoshock suspension system, ensuring excellent handling and control over varied terrain. With a focus on reliability and performance, this model represents Yamaha's commitment to competitive off-road riding.

The purpose of this comprehensive service and repair manual is to provide detailed information for the maintenance, troubleshooting, and repair of your Yamaha WR250F. It covers all major systems, including the engine mechanicals, fuel, ignition, cooling, exhaust, drivetrain, suspension, brakes, and electrical systems. Included are routine maintenance procedures, diagnostic guides for identifying and resolving issues, detailed rebuild instructions for key components, adjustment procedures, and precise torque specifications. Numerous diagrams and illustrations are provided to aid understanding, making this manual an indispensable resource for owners and technicians alike.