The Volvo Penta AQ205, powered by a 4.3L (262 cubic inch) V6 engine, represents a robust marine propulsion system likely produced from the late 1980s to early 1990s. This engine, featuring a bore of 3.74 inches and a stroke of 3.48 inches, delivers approximately 205 horsepower, making it suitable for a variety of marine applications. Its design emphasizes reliability and performance, characteristic of Volvo Penta's commitment to quality engineering in the marine sector. The engine utilizes a carbureted fuel system and is compatible with both marine closed cooling and raw water cooling systems, paired with a Volvo Penta AQ-series sterndrive. This comprehensive Factory Service Repair Manual for the Volvo AQ205 4.3L (262) V6 is designed to provide detailed guidance for owners, technicians, and mechanics. It covers essential maintenance procedures, including lubrication specifications and service intervals for oil and spark plugs, along with troubleshooting information and technical specifications. The manual also includes details on the engine's dimensions and performance, ensuring that users have the necessary knowledge to maintain and repair the unit effectively, preserving its operational integrity and longevity.