This workshop service repair manual covers the Yamaha Rhino 450 Utility Vehicle (UTV), model code YXR45F, for the production years 2006 through 2010. Engineered for demanding off-road applications, the Rhino 450 is equipped with a robust 421cc liquid-cooled, 4-stroke engine featuring a SOHC 4-valve configuration and a Mikuni BSR42 carburetor. Its reliable performance is further enhanced by an automatic CVT transmission with selectable 2WD/4WD capabilities and a durable shaft drive system. The vehicle's chassis is designed for stability and control, incorporating independent double wishbone suspension on both the front and rear, complemented by dual hydraulic disc brakes for effective stopping power. This comprehensive English-language manual provides detailed guidance on all aspects of repair, service, overhaul, and adjustment for the Yamaha Rhino 450. It serves as an essential resource for owners, mechanics, and technicians, offering in-depth information on maintenance procedures, including recommended engine oil viscosity and capacities, filter types, and fuel specifications. Technical data, troubleshooting tips, and safety guidelines are also thoroughly covered, ensuring that users can effectively maintain and repair their vehicle to factory standards, thereby maximizing its longevity and performance.