The XT660R and XT660X represent a robust lineage of dual-sport and supermoto motorcycles, produced from 2004 to 2016. These models are distinguished by their torquey, liquid-cooled, 660cc single-cylinder engines, featuring electronic fuel injection for efficient power delivery. The XT660R is engineered for versatility across various terrains, while the XT660X offers a factory supermoto configuration for enhanced street performance. Both variants embody a commitment to reliability and capable engineering, making them popular choices for riders seeking dependable performance in diverse riding environments.

This comprehensive workshop manual provides detailed guidance for the maintenance, repair, and servicing of the XT660R and XT660X models from 2004 to 2009. It covers all essential systems, including the engine, transmission, chassis, brakes, and electrical components, with step-by-step instructions for disassembly, assembly, and troubleshooting. The manual also includes crucial maintenance schedules, fluid specifications, and technical data such as torque values and clearances, ensuring owners and technicians have the necessary information to keep these motorcycles in optimal condition.