This manual covers the Volvo AQ225, a robust marine engine featuring a 5.0L V8 internal combustion configuration. Engineered for reliability and performance, this water-cooled engine, likely utilizing a carbureted fuel system and distributor-based ignition, delivers an estimated 215 horsepower. Its stern drive configuration makes it suitable for a variety of marine applications where dependable power is essential. The inherent quality of Volvo engineering ensures that with proper care, this engine will provide many years of service. The purpose of this comprehensive Service Repair Workshop Manual is to provide detailed guidance for the maintenance, repair, and troubleshooting of the Volvo AQ225 engine. It includes essential information on routine maintenance procedures such as oil changes and filter replacements, tune-up instructions, diagnostic procedures, and wiring schematics. Safety precautions are also thoroughly outlined. This manual is an indispensable resource for owners, mechanics, and technicians seeking to maintain the optimal performance and longevity of their Volvo AQ225 stern drive.