This manual covers the Volvo Penta D3-190A-B marine diesel engine. This engine is a turbocharged and intercooled, 5-cylinder, 2.4-liter unit delivering 190 horsepower. Designed for marine applications, it offers robust performance and reliability expected from Volvo Penta engineering. Its specific drive configuration can vary based on installation, accommodating sterndrive or inboard setups. The Full Service Repair Manual provides comprehensive guidance for maintaining and repairing the Volvo Penta D3-190A-B engine. It includes detailed repair and diagnostic procedures, troubleshooting guides, maintenance schedules, and wiring diagrams, all supported by detailed illustrations. This resource is essential for owners, mechanics, and technicians to ensure the optimal performance and longevity of the engine.