This comprehensive manual covers Deutz Engine models FL 912, B/FL 913/C, F3-6L 912, F3/4/6L 913, BF4/6L 913, and BF6L 913C. Designed to provide in-depth technical information, this resource aims to assist users in maintaining their engines in pristine condition, saving on repair costs while preserving the vehicle's value. The manual's detailed instructions and clear visual aids are intended to facilitate correct and efficient completion of required tasks. The scope of this manual encompasses essential areas for engine upkeep and repair, including technical specifications, symbol explanations, checking and adjusting procedures, component repair, and complete engine disassembly and reassembly. It also details necessary tools. This manual serves as an invaluable resource for owners, mechanics, and technicians, offering access to the same detailed information utilized by dealerships and service professionals to ensure optimal performance and longevity of the covered Deutz engine models.