This manual covers the Lycoming model O-435-A aviation engine, a robust and reliable powerplant designed for a variety of aircraft applications. Renowned for its engineering quality and durability, the O-435-A series has been a trusted choice for pilots and operators seeking consistent performance and longevity in demanding aviation environments. Its design prioritizes both operational efficiency and ease of maintenance, making it a versatile option for general aviation and specialized flight operations.

The purpose of this comprehensive overhaul manual is to provide detailed guidance for the maintenance, repair, and overhaul of the Lycoming O-435-A engine. It includes essential technical specifications, step-by-step procedures, troubleshooting advice, and safety guidelines. This document is an invaluable resource for aircraft owners, mechanics, and technicians, enabling them to ensure the continued optimal performance, safety, and airworthiness of their aircraft engines through proper servicing and adherence to manufacturer recommendations.