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 marine applications, the 2QM15 is designed to provide consistent power and efficiency for a range of vessel types. Its robust construction and proven design ensure dependable operation, making it a trusted choice for boat owners and operators.

This comprehensive workshop service and repair manual provides detailed information essential for the maintenance and repair of your Yanmar 2QM15 engine. It includes sections on general information, basic engine principles, and specific components such as the cylinder block, liner, and head. By following the procedures outlined within, owners, mechanics, and technicians can effectively diagnose issues, perform routine maintenance, and ensure the longevity and optimal performance of the engine.