This service repair workshop manual covers the YANMAR 6LAH-STE / 6LAHM-STE marine diesel engines, designed for marine propulsion. These engines represent robust engineering and reliability, built to meet the demanding requirements of maritime operations. Their advanced diesel technology ensures efficient and dependable performance, making them a trusted choice for a wide range of marine applications. This comprehensive manual provides detailed instructions and technical data essential for the maintenance and repair of your YANMAR marine diesel engine. It includes procedures for disassembly and assembly, inspection, and periodical servicing, along with critical technical specifications such as service standards, tightening torques, and adjusting values. With detailed illustrations and step-by-step guidance, this manual is an indispensable resource for both do-it-yourself enthusiasts and experienced mechanics to ensure optimal engine performance and longevity.