This workshop manual covers the Volvo Penta Aquamatic 250 Drive, a sterndrive designed for marine propulsion. This drive unit supports propeller rotation alteration and is engineered for reliability and performance. The 250 Series encompasses multiple models, including the AQ250A, AQ250B, AQ250C, and AQ250D, each with a corresponding part number. This manual provides comprehensive information to ensure the optimal operation and longevity of your Volvo Penta sterndrive. The purpose of this English-language workshop manual is to provide detailed guidance for the maintenance, repair, and servicing of the Volvo Penta Aquamatic 250 Drive. It includes essential sections on safety precautions, general information, and specific repair instructions for removing and assembling the drive unit, reconditioning the upper, intermediate, and lower gear housings, and fitting the drive to the transom. Technical specifications and information on special tools are also provided, enabling owners and technicians to perform correct maintenance and ensure the reliability and safety of the vessel's propulsion system.