This workshop service repair manual covers the Volvo Penta 230 series engine, an internal combustion unit designed for marine applications. While specific production years are not detailed, this manual addresses models that may feature carbureted or fuel-injected fuel systems and utilize either a stern drive or inboard drive system. The engine is equipped with an electronic ignition and a closed cooling system, representing robust engineering for reliable operation. This comprehensive English-language manual provides detailed, step-by-step instructions for maintenance and repair, supported by detailed illustrations, diagrams, and photos. It covers a wide array of systems including engine mechanical and electrical components, fuel, emission control, and drive systems. Troubleshooting assistance is included to help diagnose and resolve issues, making this an essential resource for owners and technicians seeking to maintain the performance and longevity of their Volvo Penta 230 series engine.