The TE450, a versatile dual-sport motorcycle from 2010, is engineered for both off-road adventure and street legality. Building on a rich heritage in off-road racing, this model offers a robust liquid-cooled, four-stroke single-cylinder engine with a displacement of 449.6 cc, delivering approximately 48-52 HP and 45-48 Nm of torque. Its design emphasizes durability and performance, featuring a robust chassis, adjustable front forks and a rear monoshock for superior handling, and powerful hydraulic disc brakes. With a 9.5-liter fuel tank and a wet weight of around 125 kg, the TE450 is built to tackle challenging terrains while providing a capable riding experience. This comprehensive service and repair manual provides in-depth guidance for maintaining and troubleshooting the 2010 TE450. It covers essential areas including detailed engine overhaul, fuel system (carburetor), ignition system, 6-speed transmission, chassis components, suspension servicing, and electrical systems with wiring diagrams. The manual includes step-by-step repair procedures, scheduled maintenance guidelines with specific intervals, troubleshooting flowcharts for common issues, and critical technical specifications such as torque values and clearances. This resource is designed to assist owners and technicians in ensuring the optimal performance, reliability, and longevity of their TE450.