This service manual covers the Deutz BFM 1012 and BFM 1013 engines. These engines are known for their robust engineering and reliability, designed to meet demanding operational requirements. This manual is prepared to assist both professional technicians and do-it-yourself mechanics with a basic understanding of electrical and mechanical concepts. It provides comprehensive data to ensure proper maintenance and repair procedures are followed, safeguarding the engine's performance and longevity. The purpose of this manual is to guide users through the fundamentals of repairing and maintaining the Deutz BFM 1012 and BFM 1013 engines. It includes step-by-step repair procedures, critical specifications, illustrations, maintenance schedules, and disassembly and assembly instructions. By applying the knowledge contained within, owners and technicians can make informed decisions regarding engine upkeep and repairs, ensuring the vehicle operates safely and efficiently. This resource is essential for anyone performing service on these engines.