This manual pertains to the Lombardini FOCS Series Engine, a robust and reliable engine designed for service and repair applications. Engineered with precision, these engines are built to deliver consistent performance and durability, making them a trusted choice for various operational needs. The FOCS Series represents a commitment to quality engineering, ensuring that users can depend on its functionality and longevity. The purpose of this English-language Service Repair Workshop Manual is to provide comprehensive guidance for the maintenance and repair of the Lombardini FOCS Series Engine. It covers complete disassembly, detailed step-by-step instructions, diagrams, and exploded views for all major systems, including lubrication, coolant, fuel, and electric circuits. Additionally, the manual includes information on settings, storage, torque specifications, sealant use, and special tools, equipping owners and technicians with the necessary knowledge to effectively service and maintain their engine.