The Yamaha YZ450F, produced in 2005, is a high-performance motocross and off-road competition motorcycle. It is renowned for its powerful liquid-cooled, DOHC, 4-valve, 4-stroke single-cylinder engine, featuring a Keihin FCR 39mm flat-slide carburetor and a robust aluminum alloy frame. This model is equipped with advanced KYB Speed Sensitive System (SSS) front forks and a KYB single shock rear suspension, designed to provide superior control and stability in demanding riding conditions. As a product of Yamaha Motor Company, a leader in innovative and performance-driven vehicles, the YZ450F represents a significant evolution in motocross technology, consistently being a top contender in professional racing circuits.

This comprehensive Factory Service Manual (FSM) is designed to guide owners, mechanics, and technicians through the maintenance, repair, and servicing of the 2005 Yamaha YZ450F. It covers all essential systems, including detailed engine disassembly and assembly procedures, transmission service, suspension overhauls for both front and rear components, and hydraulic brake system maintenance. The manual also provides in-depth information on the electrical system, fuel system tuning, and cooling system upkeep. With clear instructions and detailed diagrams, this manual is an indispensable resource for ensuring the optimal performance, reliability, and longevity of your YZ450F.