This manual covers the Deutz BFM 1012/E and BFM 1013/E Diesel Engines. These engines are engineered for robust performance and reliability, making them suitable for a wide range of demanding applications. Their design prioritizes durability and efficient operation, ensuring consistent power delivery across various conditions. This comprehensive guide provides detailed information essential for the maintenance and repair of these Deutz diesel engines. It includes technical specifications, procedures for checking and adjusting components, instructions for the repair of individual parts, and guidance on the disassembly and reassembly of the complete engine. The manual also lists necessary tools, facilitating efficient and accurate servicing by owners, mechanics, and technicians.