This manual covers the KLX250 D-Tracker X, a versatile Sport Dual-Purpose / Supermoto motorcycle produced for the 2009, 2010, 2011, and 2012 model years. Known for its agility and robust performance, the KLX250 platform offers a blend of on-road capability and off-road prowess, making it suitable for a variety of riding conditions. The extensive heritage in dual-purpose motorcycles underpins the engineering quality and reliability of this model, which features a liquid-cooled, 249 cc single-cylinder engine, 6-speed transmission, and responsive disc brakes. Its design prioritizes a balance of power, handling, and durability, making it a popular choice for riders seeking a capable and dependable machine. This comprehensive workshop service and repair manual is designed to provide detailed guidance for the maintenance, troubleshooting, and repair of your KLX250 D-Tracker X. It covers all major systems, including the engine, fuel injection, transmission, chassis, brakes, and electrical components, offering step-by-step instructions, overhaul procedures, and wiring diagrams. The manual is an invaluable resource for professional technicians and DIY enthusiasts alike, enabling them to perform routine maintenance, diagnose issues, and conduct complex repairs with confidence. By following the procedures outlined within, owners and mechanics can ensure the optimal performance, longevity, and safety of their motorcycle.