This manual covers the Iveco SOFIM S30 ENT M23 marine engine, produced between 2007 and 2013. The SOFIM S30 engine family is a robust inline 4-cylinder diesel engine, with this specific variant, the S30 ENT M23, featuring a 2.8-liter displacement. Engineered for reliability in demanding marine environments, these engines are known for their durable construction and efficient operation, making them a trusted choice for various maritime applications. This comprehensive Service Repair Workshop Manual provides detailed information essential for the maintenance, repair, and troubleshooting of your Iveco SOFIM S30 ENT M23 engine. It includes in-depth coverage of all diagnostic procedures and A-Z repair information, along with specific guidance on lubrication, recommended oil types, filter replacement, and cooling system maintenance. This manual is an indispensable resource for owners, mechanics, and technicians seeking to ensure optimal performance and longevity of their marine propulsion system.