This manual covers the TXC450 and TXC510 models from the 2010 model year. These motorcycles were engineered for cross-country and enduro competition. They bridge the gap between motocross and dual-sport capabilities, offering a performance-focused experience. The TXC series typically features a liquid-cooled, single-cylinder, four-stroke engine with displacements of 450cc or 510cc, a 6-speed manual transmission, and wet, multi-plate clutch systems. Hydraulic disc brakes provide stopping power, and the chassis is designed for durability and optimal handling in demanding off-road conditions. This comprehensive factory service repair manual provides detailed, step-by-step instructions, advanced troubleshooting, and mechanic guidance for owners, DIY mechanics, and professional technicians. It covers a wide range of systems including the fuel system, cooling system, engine top end, clutch, lubrication system, transmission, wheels, tires, brakes, suspension, steering, frame, and electrical system. Procedures included range from routine maintenance and tuning to complex repairs, diagnosis, rebuilds, and refurbishment. The manual's format, complete with illustrations, diagrams, photos, and a numbered table of contents, allows for efficient access to factory-level knowledge, enabling cost savings on labor and informed decision-making for vehicle upkeep.