This repair service manual covers the Volvo Penta DP-C Series drive units. Designed for marine applications, these sterndrives are known for their robust construction and reliable performance, featuring a Duoprop system for enhanced maneuverability and efficiency. The DP-C series represents a significant advancement in marine propulsion technology, engineered to deliver power and durability for a wide range of vessels. This manual provides comprehensive information for maintaining and servicing these advanced drive units. The purpose of this manual is to serve as a definitive guide for owners, technicians, and mechanics. It details step-by-step repair procedures, critical specifications, and essential maintenance schedules, including information on disassembly, assembly, cleaning, and reinstallation. Troubleshooting sections address common faults and provide diagnostic procedures for both mechanical and electrical systems. With clear illustrations and precise instructions, this manual ensures that the DP-C drive units can be kept in optimal working condition, maximizing their longevity and performance.