This workshop repair manual covers the Iveco Cursor C13 marine engine, specifically variants C13-ENS-M33 and C13-ENT-M50. These engines are engineered with a robust in-line 6-cylinder architecture, featuring 4-stroke direct injection and Electronic Diesel Control (EDC) fuel systems. The C13-ENS-M33 delivers 330 HP, while the C13-ENT-M50 offers a higher output of 500 HP, both boasting a displacement of 12880cc. Designed for demanding marine applications, the Cursor C13 series is built for reliability and performance in challenging maritime environments. This comprehensive English-language manual, published in 2007, provides essential information for the maintenance, repair, and overhaul of the Iveco Cursor C13 engines. It details periodic maintenance operations, servicing procedures for components like the injection system and heat exchanger, and guides for engine overhaul to restore factory condition, including specifications, disassembly, and assembly. Diagnostic procedures cover ECU behavior, blink codes, and troubleshooting, while the electrical equipment section addresses wiring harnesses, power supply, and various electrical components. This resource is invaluable for owners, mechanics, and technicians seeking to ensure optimal performance and longevity of their marine propulsion systems.