This manual covers Volvo Penta SP-A, SP-A1, and SP-A2 sterndrives, renowned for their robust engineering and reliability in marine applications. Designed for demanding use, these sterndrives represent a commitment to performance and durability, ensuring optimal operation across a range of conditions. Their advanced design and quality construction make them a preferred choice for boat owners and operators seeking dependable propulsion solutions. This comprehensive service repair manual, sourced directly from the factory and presented in English, provides detailed guidance for maintenance and repair. It includes extensive coverage of general engine information, safety guidelines, repair instructions, tightening torques, special tools, and model generation specifics. Furthermore, it offers in-depth sections on sterndrive removal and installation, shift mechanisms, intermediate housings, assembly and disassembly, lower gear systems, propeller shafts, forward gear systems, vertical shafts, pressure and vacuum testing, transom shields, trim systems, sterndrive extensions, welding, painting, technical data, service bulletins, and wiring diagrams. With numerous illustrations, diagrams, an advanced troubleshooting guide, detailed step-by-step instructions, comprehensive repair procedures, and included diagnostic procedures, this manual is an indispensable resource for owners and technicians to maintain and repair these sterndrives effectively, enabling significant labor savings and DIY capability.