This operation manual provides comprehensive information for the DEUTZ 912 AND 913 SERIES ENGINE. Designed for optimal performance and reliability, these engines represent robust engineering for demanding applications. This manual serves as an essential resource for understanding the intricacies of your DEUTZ engine, ensuring its longevity and efficient operation through detailed guidance. The scope of this manual covers a wide array of critical topics, including general introductions, detailed specifications, instrument and control explanations, operational instructions, and essential information on fuels and lubricants. It also includes in-depth coverage of maintenance procedures, safety guidelines for operation and maintenance, transportation preparation, and troubleshooting. This resource is meticulously compiled to assist owners, mechanics, and technicians in maintaining, operating, and repairing the DEUTZ 912 AND 913 SERIES ENGINE effectively.