This workshop service manual covers the Volvo Penta MD5A, MD6A, and MD7A marine diesel engines. These engines are engineered for reliable marine propulsion, utilizing diesel fuel to deliver consistent performance. Volvo Penta is recognized for its robust engineering and commitment to quality, ensuring these engines meet the demanding requirements of marine applications. This manual provides comprehensive guidance for the maintenance and repair of your Volvo Penta marine diesel engine. It details essential information including safety precautions, general information, repair methods, and specific repair instructions. Technical data and information on special tools are also included to assist owners, mechanics, and technicians in performing all necessary service procedures and ensuring the longevity and optimal operation of the engine.