The KTM 400 LC4 is a robust dual-sport and enduro motorcycle renowned for its powerful, torquey single-cylinder engine and exceptional off-road capabilities. Produced from 1998 to 2006, this model features high-quality WP suspension, a durable chromoly steel frame, and a reputation for strong mid-range power delivery, making it a capable machine for demanding use. Its LC4 engine platform is a cornerstone of KTM's heritage, emphasizing a 'Ready to Race' philosophy and offering a raw, engaging riding experience that competed effectively against other leading dual-sport motorcycles of its era.

This comprehensive workshop service manual provides detailed guidance for the maintenance, repair, and overhaul of the KTM 400 LC4 motorcycle. It covers all essential systems, including the engine, fuel system, transmission, brakes, suspension, and electrical components, with step-by-step procedures for disassembly, inspection, and reassembly. The manual also includes routine maintenance schedules, troubleshooting tips for common issues, technical specifications, and critical torque values, serving as an indispensable resource for owners, mechanics, and technicians to ensure the optimal performance and longevity of their vehicle.