This manual covers the 2001 KTM 400 LC4 and 2001 KTM 660 LC4 dual-sport motorcycles. KTM is renowned for its performance-oriented motorcycles, and the LC4 platform, powered by its robust single-cylinder engine, is a testament to this heritage. These models are engineered for demanding off-road conditions and versatile dual-sport riding, offering a potent combination of torque and reliability. The LC4 engine, a cornerstone of KTM's off-road legacy, provides distinct performance characteristics tailored for riders seeking capability and endurance.

This comprehensive workshop repair service manual provides in-depth, A-Z coverage for all maintenance and repair tasks. It includes detailed procedures for engine mechanicals, fuel and ignition systems, transmission, brakes, suspension, and electrical systems. You will find step-by-step instructions for routine maintenance, component overhauls, and troubleshooting common issues, along with essential technical specifications and torque values. This manual is designed to assist owners, mechanics, and technicians in maintaining and repairing their KTM 400 LC4 or 660 LC4, ensuring optimal performance and longevity.