This manual covers the Iveco SOFIM S30 ENT M23 marine engine, a robust internal combustion diesel engine designed for marine propulsion. Engineered for reliability and performance, this unit represents a significant advancement in marine power technology, offering efficient operation and durable construction for demanding maritime applications. Its advanced design ensures consistent power delivery and fuel efficiency, making it a preferred choice for various marine vessels. This Factory Service Repair Workshop Manual provides comprehensive guidance for the maintenance, repair, and troubleshooting of the Iveco SOFIM S30 ENT M23. It includes detailed step-by-step instructions, hundreds of pages with detailed photos and diagrams, and highly detailed exploded diagrams to assist owners, mechanics, and technicians. The manual covers all repairs, servicing, and troubleshooting procedures, ensuring the optimal performance and longevity of your marine engine.