This manual covers the Yanmar 2QM15 marine diesel engine, a 2-cylinder, vertical, 4-cycle, water-cooled, precombustion type engine. Engineered for reliability and performance in demanding marine environments, the 2QM15 is designed to provide efficient power for a variety of vessel applications. Its robust construction and proven technology ensure dependable operation and longevity, making it a trusted choice for boat owners and operators.

The purpose of this workshop service repair manual is to provide comprehensive guidance for the maintenance, troubleshooting, and repair of the Yanmar 2QM15 diesel engine. It includes detailed information on general engine principles, specific component overhauls such as the cylinder block and liner, and other essential technical data. This manual serves as an indispensable resource for owners, mechanics, and technicians to ensure the optimal performance and longevity of their Yanmar 2QM15 engine.