This manual covers the Volvo Penta Aquamatic drive models 100 and 100B. These marine propulsion systems are engineered for reliability and performance in demanding aquatic environments. The Aquamatic series represents Volvo Penta's commitment to quality marine engineering, providing boat owners with dependable power and efficient operation for a wide range of boating applications. This comprehensive drive repair manual provides essential information for maintaining and repairing your Volvo Penta Aquamatic drive. It includes detailed sections on routine maintenance, advanced troubleshooting, engine integration, fuel and cooling systems, transmission, steering, suspension, body work, intake and exhaust, and electrical systems. This guide is designed to assist owners and technicians in performing necessary repairs and upkeep, ensuring the longevity and optimal performance of the drive unit.