This workshop service repair manual covers the Volvo AQ260, a marine engine featuring a 5.7L (350 cubic inch) V8 engine that produces 260 horsepower. Known for Volvo's commitment to engineering quality and reliability, the AQ260 is designed for robust performance in marine applications. This manual provides comprehensive information to ensure optimal operation and longevity of your vessel's propulsion system. The purpose of this English-language manual is to serve as an authoritative guide for owners, mechanics, and technicians. It details essential maintenance procedures, including scheduled maintenance and tuning, as well as in-depth engine repair instructions. Coverage extends to critical systems such as fuel, ignition, electrical, and cooling, along with stern drive operation, tilt/trim, and steering. Troubleshooting guidance, safety information, and detailed diagrams and photos are included to facilitate accurate diagnostics and repairs.