This workshop service repair manual covers Deutz Engine models FL 912, B/FL 913/C, and specifically the F3 - 6L 912 and F3/4/6L 913 BF4/6L 913 BF6L 913C variants. These engines are known for their robust engineering and reliability, suitable for a wide range of demanding applications. This manual provides comprehensive information to ensure optimal performance and longevity of your Deutz engine. The purpose of this manual is to guide users, from novice owners to professional technicians, through the maintenance and repair processes. It includes detailed sections on technical specifications, checking and adjusting procedures, component repair, and complete engine disassembly and reassembly. Essential information on required tools is also provided, enabling correct execution of all tasks and helping to prevent premature failures and unnecessary costs.