This service manual covers the Deutz BF4M 1012 E 1013 E Engine. It provides comprehensive data, instructions, and methodologies for performing repair interventions and maintenance on the engine and its components. The manual is designed to offer detailed, step-by-step procedures, explanations, and diagrams to ensure satisfactory service and repair work, aiming to maintain the engine's reliability and optimal condition. The purpose of this manual is to serve as a handy, easy-to-read reference for mechanics and DIY individuals. It includes information on diagnosis, testing, adjustments, removal, installation, disassembly, and assembly procedures for various systems and components. Special attention is given to safety guidelines, precautions, factory specifications, and allowable limits, ensuring that all repair and maintenance work is performed safely and effectively. The manual also details the use of special service tools and equipment, emphasizing the importance of using correct parts and calibrated instruments for accurate measurements and reliable operation.