This manual covers the Volvo Penta AQ125 and AQ145 series inboard marine engines, designed for reliable performance in a variety of watercraft. These 4-cylinder, gasoline-powered engines feature a 2.3-liter displacement and deliver 130 HP at 5200 RPM. They are equipped with a carburetor fuel system, a closed cooling system with a heat exchanger and raw water cooling, and a distributor ignition system. The engines are paired with an inboard outdrive transmission offering forward, neutral, and reverse gears, ensuring efficient power transfer for recreational boating applications. This comprehensive Service Repair Manual provides detailed information essential for the maintenance and repair of your Volvo Penta AQ125/AQ145 engine. It includes in-depth procedures for servicing various components, technical specifications, troubleshooting guidance, and safety recommendations. The manual is designed to assist owners, technicians, and mechanics in keeping the engine in optimal condition, ensuring its longevity and performance. With 680 pages of expert information, this English-language manual is an indispensable resource for all aspects of engine care.