This workshop service repair manual covers the Bukh DV20 Model C, an internal combustion engine designed for service, maintenance, and troubleshooting. Engineered for reliability, the DV20 Model C represents a robust solution for various applications. Its design emphasizes durability and efficient operation, making it a trusted component in its intended use. This comprehensive manual provides detailed step-by-step repair procedures, complete with detailed illustrations, drawings, and photos to guide users through disassembly, servicing, cleaning, and reinstallation. It includes extensive diagnostic information, troubleshooting guides, and electrical service procedures, all integrated with detailed wiring diagrams. Furthermore, the manual covers essential maintenance topics such as checklists, general checks, fuel system, cooling system, fuel filter service, and electrical system maintenance, including alternator and regulator service, alongside crucial servicing specifications and tightening torques.