This manual covers the Bukh DV20 Model C internal combustion engine, designed for maintenance, repair, rebuilding, refurbishing, and restoration. The Bukh brand is recognized for its engineering quality and reliability, ensuring that this engine service repair manual provides comprehensive guidance for its operation and upkeep. This document is essential for anyone seeking to maintain the optimal performance and longevity of their Bukh DV20 Model C engine. The purpose of this factory service repair manual is to provide detailed information for the effective maintenance and repair of the Bukh DV20 Model C. It includes extensive coverage of general precautions, engine identification, maintenance checklists, and specific servicing procedures for components such as the fuel filter and cooling system. Furthermore, the manual offers detailed substeps, numbered instructions, notes, cautions, warnings, special tools, tightening torques, and comprehensive troubleshooting guidance, complete with necessary illustrations, diagrams, photos, and electrical system wiring diagrams.