This digital workshop repair manual covers the Volvo Penta MD22, TMD22, and TAMD22 marine engines. These 2.3-liter, 4-cylinder in-line engines are known for their robust engineering and reliability in marine applications. The MD22 is naturally aspirated, while the TMD22 is turbocharged, and the TAMD22 features both turbocharging and intercooling, offering power outputs ranging from approximately 40 hp to 65 hp. Designed for inboard use with various Volvo Penta marine gearboxes, these engines are built to perform in demanding maritime environments. This comprehensive English-language manual provides detailed diagnostic and repair procedures, maintenance schedules, and rebuilding information for the specified Volvo Penta engine series. It includes essential technical specifications, common maintenance tasks such as cooling system service and filter replacements, and guidance on oil capacity. With high-quality photos, illustrations, and diagrams, this manual is an indispensable resource for owners, mechanics, and technicians seeking to maintain, troubleshoot, and repair their MD22, TMD22, or TAMD22 marine engines, ensuring optimal performance and longevity.