This manual covers the Industrial Marine 9, 12, and 16 Diesel Engine series, designed for robust performance in industrial and marine applications. These engines are engineered for reliability and efficiency, featuring advanced diesel technology. The D9 engine offers 9 liters of displacement, while the D12 and D16 models provide 12 and 16 liters respectively. Specific features include water-cooled systems, lubrication systems, and turbocharging for the D12 and D16 variants. This comprehensive workshop service repair operators manual provides essential information for maintaining and repairing these engines. It includes detailed procedures for diagnostics, repair, restoration, and rebuilding, supported by zoomable illustrations and detailed exploded views of components. The manual is presented in English and is compatible with Windows, Linux, and Mac operating systems, requiring a PDF reader for access.