This manual covers the KTM 400 660 LC4 models produced in 1998. These vehicles are recognized for their robust engineering and reliability, designed to meet the demands of various riding conditions. The LC4 series is known for its distinctive performance characteristics and durable construction, making it a preferred choice for riders who value both capability and longevity. This guide is intended to support the upkeep and operation of these specific KTM motorcycles.

The purpose of this service manual is to provide comprehensive information for the maintenance, repair, and technical understanding of the KTM 400 660 LC4 1998. It details essential procedures, technical specifications, and troubleshooting guidance. Owners, mechanics, and technicians will find the information within this manual invaluable for ensuring the optimal performance and longevity of their vehicle, covering all necessary aspects for effective servicing.