The 2006 Yamaha WR450F is a high-performance, liquid-cooled, 4-stroke off-road competition motorcycle engineered for enduro racing and demanding trail riding. It features a potent 449cc engine with DOHC and four valves, delivering strong mid-range and top-end torque, complemented by an electric starter for convenience. The WR450F is built on a lightweight aluminum frame and equipped with fully adjustable Kayaba suspension, offering substantial travel for tackling challenging terrain. Powerful hydraulic disc brakes at both the front and rear provide reliable stopping power, while the robust chassis is designed for durability and agility in competitive off-road environments.

This comprehensive service manual is designed to be an essential resource for owners and technicians alike. It covers all aspects of maintaining, troubleshooting, and repairing the 2006 Yamaha WR450F. Key areas detailed include general information, specifications, regular inspection and adjustment procedures, in-depth coverage of the engine and chassis systems, and electrical system diagnostics. The manual provides step-by-step repair procedures, routine maintenance schedules, troubleshooting guides for common issues, and tuning recommendations to ensure the WR450F operates at its peak performance and longevity.