This workshop service repair manual covers the Volvo AQ271, a marine engine variant featuring a 5.7L (350) V8 engine. Engineered with Volvo's renowned quality and reliability, this propulsion system is designed for robust performance. The 5.7L V8 engine, with its substantial displacement, offers considerable power output, typically ranging from 250 to 300 horsepower depending on the specific application. This manual provides comprehensive information for maintaining and repairing this powerful and dependable marine engine and its associated stern drive systems. The purpose of this manual is to serve as an authoritative guide for owners, mechanics, and technicians. It includes detailed step-by-step repair procedures, often accompanied by illustrations, covering essential components such as the engine, fuel system, ignition, electrical system, cooling system, stern drive, tilt/trim, and steering. Furthermore, the manual offers thorough troubleshooting guidance, essential wiring diagrams, and a complete maintenance schedule, including specific recommendations for fluids and capacities. This comprehensive resource ensures that the Volvo AQ271 can be kept in optimal operating condition throughout its service life.