This workshop service repair manual provides comprehensive documentation for the Volvo AQ140 marine engine. The AQ140 is a water-cooled, inline 4-cylinder engine from the AQ Series, displacing 2.1 liters and producing 130 horsepower. Designed for marine applications, it features a stern drive configuration and typically utilizes a carbureted fuel system. This manual details its robust engineering and reliability, essential for maintaining optimal performance in demanding marine environments. This complete official factory manual in English covers all aspects of maintenance, repair, and diagnostics for the Volvo AQ140. It includes detailed procedures for engine overhaul, electrical system repairs with wiring diagrams, and troubleshooting guidance for common issues. Owners, mechanics, and technicians will find essential technical specifications, recommended maintenance schedules, and step-by-step instructions to ensure the longevity and proper functioning of their marine propulsion system.