The 2008 Yamaha WR250F X (Supermoto) represents a capable and performance-oriented machine, blending off-road heritage with street-legal agility. This model features a robust 250cc liquid-cooled, four-stroke engine with DOHC and five-valve configuration, paired with a responsive Keihin FCR39 flatslide carburetor. Its chassis is built upon a rigid aluminum bilateral beam frame, complemented by advanced Kayaba suspension components, including a 46mm Speed-Sensitive System (SSS) upside-down telescopic front fork and a fully adjustable Kayaba Monocross single shock. The WR250X variant is distinguished by its street-biased tires and wheels, hydraulic disc brakes front and rear, and a minimalist design focused on performance and rider engagement, making it suitable for spirited riding and daily commuting.

This comprehensive Service & Repair Manual for the 2008 Yamaha WR250F X provides in-depth technical information essential for maintaining and repairing the motorcycle. It covers a wide array of systems, including detailed procedures for engine service, fuel and ignition systems, cooling, exhaust, transmission, chassis, suspension, brakes, wheels, tires, and the electrical system. The manual offers step-by-step guidance on routine maintenance, troubleshooting common issues, engine rebuilds, suspension overhauls, brake system servicing, and carburetor adjustments. With factory-level accuracy and advanced diagnostic procedures, including torque specifications and clearance measurements, this manual is an indispensable resource for owners, mechanics, and technicians seeking to ensure the optimal performance, reliability, and longevity of their WR250F X.