This marine engine service manual covers the Volvo Penta AQ125 AQ145 A B models. Designed for internal combustion marine engines, these units are engineered for reliability and performance in demanding aquatic environments. This manual provides comprehensive information to ensure optimal operation and longevity of your Volvo Penta marine engine. This service repair workshop manual offers detailed instructions for all repairs, servicing, and troubleshooting procedures. It includes hundreds of pages with detailed photos, diagrams, exploded views, and step-by-step instructions. The manual is intended for owners, mechanics, and technicians to effectively maintain and repair their marine engines, ensuring continued operational readiness and safety on the water.