The KLX250S is a versatile lightweight dual-sport motorcycle, designed to excel in a variety of environments including trail riding, off-road excursions, light commuting, and adventure touring. Produced for the 2009 and 2010 model years, this model is recognized for its robust engineering, inherent reliability, and the accessibility offered by its manageable power and relatively low seat height. Building on a strong heritage in off-road and racing, the KLX250S represents a refined 250cc dual-sport offering, adeptly balancing performance with user-friendliness for a broad spectrum of riders. This comprehensive workshop service and repair manual provides in-depth guidance for the KLX250S. It covers all essential aspects necessary for maintaining and repairing the motorcycle, from routine service intervals and fluid specifications to detailed engine mechanicals, fuel system, ignition, transmission, chassis, suspension, brakes, wheels, tires, and the complete electrical system. With step-by-step repair instructions, troubleshooting guides, and essential technical specifications, this manual serves as an indispensable resource for professional technicians and skilled DIY mechanics alike, ensuring the optimal performance and longevity of the vehicle.