This manual covers the repair and maintenance of the KTM 400-660 LC4 engine, specifically for models produced in 2003. The LC4 engine platform is renowned for its robust construction and performance capabilities, making it a popular choice for demanding applications. This document is designed to provide comprehensive technical information for this specific engine series.

The scope of this manual encompasses detailed procedures for engine repair and servicing. It aims to equip owners, technicians, and mechanics with the necessary knowledge to perform maintenance tasks, diagnose issues, and execute repairs effectively. By following the guidelines and specifications outlined within, users can ensure the optimal performance and longevity of their KTM 400-660 LC4 engines.