This manual covers the LT-A450X King Quad, produced for the model years 2007 through 2010, including specific models LT-A450XK7, LT-A450XK8, and LT-A450XK9. There is a long-standing reputation for robust and reliable off-road vehicles, and the King Quad series represents their flagship line of utility ATVs, known for powerful engines and advanced features. This particular model is equipped with a 4-stroke, DOHC, single-cylinder engine with approximately 450 cc displacement, featuring liquid cooling and Electronic Fuel Injection (EFI) for optimized performance. The transmission is an automatic CVT with selectable 2WD/4WD modes, and it is equipped with hydraulic disc brakes for reliable stopping power. This comprehensive Workshop Service Repair Manual provides detailed information for maintaining and repairing the LT-A450X King Quad. It covers all vehicle systems, including engine overhaul, fuel system, cooling and lubrication, drivetrain, chassis, electrical system, and emission control. The manual includes step-by-step repair instructions, scheduled maintenance procedures, troubleshooting guides with diagnostic charts, torque specifications, and technical data such as valve clearance and battery specifications. Designed for both owners and professional technicians, this English-language manual aims to empower users with the knowledge to perform routine maintenance, diagnose issues, and complete repairs efficiently, ensuring the longevity and optimal performance of their vehicle.