The KTM 950 Adventure and 990 Adventure, part of the first generation LC8 Adventure series produced from 2003 to 2007, represent a significant entry into the dual-sport and adventure touring motorcycle market. Renowned for their powerful LC8 V-twin engines, long-travel WP suspension, and robust chassis, these Austrian-manufactured machines were purpose-built for adventure, offering exceptional off-road capability and performance for long-distance touring. Their design philosophy emphasizes a blend of speed and ruggedness, making them highly capable across varied terrains and a strong competitor to other adventure bikes of their era. This comprehensive English-language service manual provides detailed repair and maintenance information for the KTM 950 Adventure and 990 Adventure models. It covers all essential systems, including the engine, fuel, ignition, transmission, drivetrain, suspension, brakes, and electrical systems, along with routine maintenance, troubleshooting, and rebuilding procedures. With detailed illustrations and in-depth sub-steps, this manual is an invaluable resource for owners and professional technicians seeking to maintain, diagnose, and repair these motorcycles effectively.