This manual covers the Volvo Penta AQ231, a V8 marine engine with a 5.0L (305 cubic inches) displacement. Designed for reliable performance, this engine is typically carbureted and features a marine closed cooling system, paired with a sterndrive. Its robust engineering ensures dependable operation for various marine applications. This comprehensive Factory Service Repair Manual provides detailed information for the maintenance and repair of the Volvo Penta AQ231 engine. It includes essential procedures, technical specifications, troubleshooting guidance, and safety information. This resource is designed to assist owners, mechanics, and technicians in effectively servicing and maintaining the vehicle, ensuring optimal performance and longevity.