This manual covers the Yanmar 6CXM-GTE and 6CXM-GTE2 marine diesel engines. These engines are engineered for reliable performance in demanding marine environments. This service repair manual provides comprehensive information to ensure these engines operate at their peak efficiency and longevity. This document serves as an essential resource for maintaining and repairing your Yanmar marine diesel engines. It details general information, disassembly and reassembly procedures, inspection and servicing of major engine parts, periodic inspections, service standards, tightening torques, and troubleshooting. With easy-to-read text, high-quality diagrams, and step-by-step instructions, this manual is designed for both do-it-yourself enthusiasts and experienced mechanics.