This manual covers the 450 SX-F, a high-performance motocross competition motorcycle produced in 2010. Renowned for its powerful LC4 single-cylinder, 4-stroke engine and agile handling, the 2010 450 SX-F was engineered to deliver competitive performance on the track. It features premium suspension components, a robust chromium-molybdenum steel frame, and a sophisticated electronic fuel injection system, all contributing to its reputation for exceptional off-road capability and rider engagement. This comprehensive dealer-level service repair manual provides in-depth information for all aspects of the 2010 450 SX-F. It details engine disassembly and assembly, transmission servicing, chassis and suspension maintenance, brake system repairs, and electrical system diagnostics. The manual includes routine maintenance procedures, troubleshooting guides for common issues, and step-by-step instructions for complex repairs. Essential technical specifications, torque values, fluid recommendations, and diagrams are provided to assist owners, mechanics, and technicians in maintaining and repairing the vehicle to optimal working condition.