This manual covers the KTM 400 EXC / LC4 models produced between 2000 and 2003. These motorcycles, built upon the robust LC4 engine platform, are renowned for their high-performance dual-sport and enduro capabilities, ruggedness, and off-road prowess. Engineered in Austria, KTM has a strong heritage in motorsport, and the LC4 series embodies this commitment to performance and durability, making it a formidable choice for demanding riding conditions.

This comprehensive repair service manual is designed for professional technicians and experienced DIY mechanics. It provides in-depth coverage of all major systems, including engine mechanicals, fuel and ignition systems, transmission, electrical components, suspension, brakes, and chassis. Detailed procedures for routine maintenance, engine and transmission overhauls, suspension servicing, brake system repairs, and electrical troubleshooting are included, along with essential torque specifications and diagnostic guides to ensure optimal performance and longevity of your KTM motorcycle.