This manual covers the Side-by-Side (SxS) / Utility Vehicle, model code YXR45F, for the production years 2006 through 2010. Engineered for reliable performance and versatility, the 450 is equipped with a 421cc liquid-cooled, 4-stroke engine, automatic V-belt transmission, and an On-Command® 2WD/4WD drive system with a locking front differential. Its robust chassis features independent front and rear suspension, hydraulic disc brakes, and ample ground clearance, making it well-suited for a variety of utility and recreational tasks. This comprehensive Service Repair Manual provides highly detailed information to repair, maintain, rebuild, refurbish, and restore your 450. It includes essential technical specifications, step-by-step maintenance procedures, troubleshooting guidance, and safety information. This resource is designed to assist owners, mechanics, and technicians in ensuring the optimal performance and longevity of their vehicle.