This document pertains to the Volvo AQ165, an inline 6-cylinder engine with a 3.0-liter displacement. It is designed for marine applications and is known for its robust construction and reliable performance, delivering approximately 152 horsepower. The engine utilizes a liquid-cooling system and operates on gasoline. This Factory Service Repair Manual provides comprehensive guidance for the Volvo AQ165 engine. It covers essential maintenance procedures, troubleshooting techniques, detailed technical specifications, and critical safety information. This manual is an indispensable resource for owners, mechanics, and technicians seeking to maintain, service, and repair the AQ165 engine effectively, ensuring its longevity and optimal operation.