This workshop service repair manual covers the Bukh DV10 and DV20 internal combustion engines. These engines are known for their robust engineering and reliability, designed for demanding applications where dependable performance is paramount. This manual provides comprehensive information to ensure these engines operate at their peak efficiency and longevity. This English-language manual serves as an essential resource for owners, mechanics, and technicians. It details maintenance schedules, step-by-step repair procedures, comprehensive diagnostic information, and troubleshooting guidance. Included are critical technical specifications, disassembly and assembly instructions, information on special tools, and detailed coverage of the electrical system with wiring diagrams, all supported by detailed illustrations.