The Yamaha YFZ450R, produced for the 2009-2010 model years, is a high-performance All-Terrain Vehicle (ATV) engineered for demanding off-road riding and racing. Featuring a powerful 449cc four-stroke, liquid-cooled engine with DOHC and 5-valve technology, this ATV delivers exceptional power and responsiveness. Its robust construction, independent double wishbone front suspension, and swingarm rear suspension are designed for superior handling and control on challenging terrain. The YFZ450R is a testament to advanced engineering and off-road capability, making it a top choice for enthusiasts seeking a thrilling and reliable riding experience.

This Service Repair Manual provides comprehensive guidance for the maintenance and repair of the Yamaha YFZ450R ATV. It covers a wide range of essential information, including detailed procedures for routine maintenance, engine diagnostics, clutch service, and lubrication specifications. Technical data, such as fuel capacity, oil capacity, ignition system details, and recommended spark plugs, are also included. This manual is an indispensable resource for owners, mechanics, and technicians, offering the knowledge necessary to ensure the optimal performance, longevity, and safe operation of the vehicle.