This manual covers the KTM 660 LC4 motorcycle, produced from 1998 to 2003. The 660 LC4 is a performance-oriented dual-sport and supermoto machine, renowned for its potent single-cylinder engine and robust Austrian engineering. It offers a blend of off-road capability and street prowess, reflecting KTM's 'Ready to Race' heritage. The LC4 platform is celebrated for its versatility and rider engagement, making the 660 LC4 a distinctive choice in its market segment.

This comprehensive workshop service repair manual provides detailed guidance for owners, mechanics, and technicians. It covers all essential maintenance procedures, from routine oil changes and filter replacements to in-depth engine and transmission rebuilds. The manual includes troubleshooting guides for common issues, component replacement instructions, and precise torque specifications. With clear explanations, exploded views, and wiring diagrams, this manual is an indispensable resource for maintaining the performance, reliability, and longevity of your KTM 660 LC4.