The KTM 400 XC-W, produced in 2009, is a high-performance competition enduro motorcycle designed for off-road enthusiasts and enduro riders. It features a robust single-cylinder, four-stroke liquid-cooled engine with a displacement of approximately 397 cc, DOHC valve actuation, and electronic fuel injection for responsive power delivery. The motorcycle is built around a chromium-molybdenum steel trellis frame and equipped with premium WP suspension components, adjustable for optimal performance across varied terrains. Notable features include an electric starter for convenience and Brembo hydraulic disc brakes for reliable stopping power. Known for its 'Ready to Race' philosophy, KTM has a strong legacy in motorsports, and the XC-W line embodies this with its focus on performance and reliability in demanding off-road conditions.

This service repair manual provides comprehensive guidance for the maintenance and repair of the 2009 KTM 400 XC-W. It covers detailed procedures for all major systems, including engine management, powertrain, suspension, brakes, and the electrical system. Owners and technicians will find step-by-step instructions for routine maintenance tasks such as oil changes and filter replacements, as well as in-depth guidance for complex procedures like engine rebuilding, transmission overhaul, and suspension tuning. The manual also includes troubleshooting guides, diagnostic capabilities for the ECU, and lists of any specialized tools required. Its scope is designed to assist both amateur mechanics and professional technicians in keeping the vehicle in optimal condition and ensuring its longevity and performance.