This manual covers the Utility Vehicle (UTV), model code YXR45F, for the production years 2006 through 2011. Engineered for demanding off-road applications, the 450 features a robust 4-stroke, 421 cc liquid-cooled engine with a 4-valve SOHC configuration and a Mikuni BSR33/1 carburetor. Its reliable drivetrain includes an automatic CVT transmission with selectable 2WD/4WD shaft drive and reverse. The chassis is equipped with independent double-wishbone suspension on both the front and rear, complemented by hydraulic disc brakes for effective stopping power. The 450 is designed for durability and performance in various utility and recreational environments. This comprehensive Service Repair Manual provides detailed, step-by-step instructions and diagrams essential for maintaining and repairing your 450. It covers all workshop repair procedures, electrical diagrams, service procedures, and fluid capacities, including engine oil type and capacity, coolant capacity, and gear oil specifications. The manual also includes a dedicated troubleshooting section to assist in diagnosing and resolving common issues. This resource is an invaluable tool for owners, mechanics, and technicians seeking to ensure the optimal performance and longevity of their vehicle.