The KTM 400 LC4, produced between 1998 and 2003, is a robust dual-sport and enduro motorcycle renowned for its potent single-cylinder LC4 engine and formidable off-road capabilities. This model, available in LC4 Enduro and Supermoto variants, exemplifies KTM's heritage in performance-oriented off-road machinery, offering a blend of power and maneuverability. Its design emphasizes durability and the ability to handle demanding terrain, making it a capable machine for both adventurous trail riding and adapted street use. The engineering quality and reliability of the 400 LC4 are hallmarks of KTM's commitment to producing high-performance motorcycles.

This comprehensive service manual is designed to provide detailed repair and service information for the KTM 400 LC4 models from 1998 to 2003. It covers all essential systems, including the engine, fuel, ignition, cooling, transmission, drivetrain, suspension, brakes, and electrical systems. The manual offers in-depth procedures for routine maintenance, troubleshooting, and complete component overhauls, making it an indispensable resource for professional technicians and advanced enthusiasts alike. By following the guidelines and technical specifications within this manual, owners and mechanics can effectively maintain, diagnose, and repair the vehicle, ensuring its optimal performance and longevity.