This factory service repair manual provides comprehensive information for the Volvo AQ140 marine engine. This inline 4-cylinder engine, with a displacement of 2.1 liters and an implied power output of 130 horsepower, is engineered for reliability and performance in marine applications. The manual covers various aspects of the engine, including its cooling, fuel, ignition, and electrical systems, as well as the stern drive and tilt trim functionalities. Detailed maintenance procedures, service intervals, and oil capacity information are included to ensure optimal operation and longevity. The purpose of this English-language manual is to serve as an authoritative resource for owners, professional technicians, and mechanics. It contains detailed, step-by-step instructions, advanced troubleshooting guides, and clear diagrams and illustrations to facilitate understanding and execution of maintenance and repair tasks. Technical specifications, safety precautions, and guidance on engine overhaul and repair are all thoroughly covered, making this manual an essential tool for maintaining the Volvo AQ140 engine.