The 2006 Yamaha WR450F is a high-performance off-road and enduro motorcycle, representing the second generation of this capable machine. It is powered by a liquid-cooled, four-stroke, 449cc engine featuring a DOHC setup and a Keihin FCR carburetor with an accelerator pump, delivering approximately 50-55 horsepower. The WR450F is built upon a lightweight aluminum bilateral beam frame, providing optimal rigidity and handling, and is equipped with advanced front forks and a fully adjustable rear suspension for superior off-road performance. Its design prioritizes power, agility, and reliability, making it a formidable choice for demanding terrain.

This comprehensive factory service manual provides detailed information for the maintenance, troubleshooting, and repair of the 2006 Yamaha WR450F. It covers all essential systems, including in-depth procedures for engine disassembly and assembly, transmission service, fuel system tuning, cooling system maintenance, ignition system diagnostics, and electrical system troubleshooting. The manual also details suspension service, brake system procedures, chassis and frame inspections, and wheel and tire maintenance, along with routine service intervals and fluid specifications. Its scope extends from basic upkeep to complete engine overhauls, offering essential guidance for owners and technicians to ensure the optimal performance and longevity of the vehicle.