This manual covers the Volvo Penta TAMD61A-72J-A, a marine diesel engine known for its robust construction and reliable performance. Featuring a turbocharged and aftercooled inline 6-cylinder configuration with approximately 6.0 liters of displacement, this engine is engineered for demanding marine applications. Its indirect cooling system ensures efficient operation in various conditions. The model designation suggests compatibility with stern drive systems, likely a DuoProp or similar configuration, making it a versatile choice for a range of vessels. The purpose of this English-language Instruction Manual is to provide comprehensive guidance for the operation, maintenance, and troubleshooting of the Volvo Penta TAMD61A-72J-A. It details essential procedures, technical specifications, and safety guidelines necessary for optimal performance and longevity. This resource is invaluable for owners, mechanics, and technicians seeking to understand and maintain the engine and its associated stern drive system, ensuring its continued reliability on the water.