This workshop manual covers the Lombardini LDW Series diesel engines, including models LDW 502, LDW 602, LDW 903, LDW 1204, and LDW 1204T, from the 2008 FOCS-series generation. These engines are engineered for reliability and efficiency, offering a range of displacements from 0.502 to 1.204 liters, with both naturally aspirated and turbocharged configurations available for the LDW 1204T. Their robust construction and advanced design make them suitable for various demanding applications. This comprehensive English-language workshop manual provides essential information for the maintenance and repair of your Lombardini engine. It details technical specifications, disassembly and reassembly procedures, and service guidelines for critical systems including lubrication, cooling, fuel, and electrical systems. Additionally, it covers turbocharger service, settings, adjustments, and includes information on engine storage and special tools, ensuring optimal performance and longevity.