This manual covers the MAN D2840 LE301 and D2842 LE301 Series marine diesel engines. These engines are engineered for robust performance and reliability in demanding marine applications. Featuring V10 or V12 configurations with substantial displacement, they are designed to deliver dependable power for a variety of maritime needs. The commitment to quality in MAN engines ensures sustained operation and efficiency. The purpose of this comprehensive workshop service repair manual is to provide detailed information for the maintenance and repair of your MAN marine diesel engine. It includes essential procedures, technical specifications, and guidance to ensure optimal performance and longevity. This manual is an indispensable resource for owners, technicians, and mechanics, offering the knowledge required for effective servicing and troubleshooting.