This manual pertains to Lycoming Aircraft Engines, a leading manufacturer of piston aircraft engines. These engines are renowned for their robust engineering, reliability, and performance, making them a trusted choice for a wide array of aircraft applications. The operation and maintenance of these internal combustion engines, which typically utilize Aviation Gasoline (Avgas), are critical for ensuring safe and efficient aircraft propulsion. This comprehensive guide covers the operational procedures and maintenance recommendations essential for Lycoming engine owners and operators.

The purpose of this Operation Manual is to provide detailed information for the proper use and upkeep of Lycoming aircraft engines. It encompasses essential operational procedures, maintenance guidelines, and performance considerations. This document is designed to assist pilots, mechanics, and technicians in understanding and managing their Lycoming engines, ensuring optimal performance and longevity. By following the instructions and recommendations within this manual, users can maintain the high standards of quality and reliability associated with Lycoming products.