This manual covers the Bukh DV10 and DV20 internal combustion engines, designed for maintenance, repair, rebuilding, refurbishing, and restoration. Bukh engines are recognized for their robust engineering and reliability, making them a trusted choice for various applications. This documentation provides comprehensive information to ensure the optimal performance and longevity of your Bukh engine. The purpose of this Factory Service Repair Manual is to equip owners, mechanics, and technicians with the necessary knowledge for effective vehicle upkeep. It includes detailed step-by-step repair procedures, an advanced troubleshooting guide, and essential maintenance information such as checklists, servicing specifications, and tightening torques. The manual is presented in English and features detailed illustrations, drawings, and photos, with enlarged insets for close examination of components, alongside crucial safety notes, cautions, and warnings.