This workshop manual covers the Volvo Penta MD6A and MD7A internal combustion engines, designed for marine propulsion. These engines are known for their robust engineering and reliability, making them a dependable choice for various marine applications. This manual provides comprehensive information to ensure optimal performance and longevity of your Volvo Penta engine. The purpose of this service repair manual is to provide detailed instructions and step-by-step diagrams for all workshop procedures. It covers essential areas including safety precautions, general information, repair methods, electrical systems, special tools, and technical data. This resource is invaluable for owners, mechanics, and technicians seeking to maintain and repair these engines effectively, ensuring they continue to run well.