This manual covers Mercury MerCruiser MPI engines, specifically models such as the 5.0L, 5.7L, and 6.2L MPI series, including Sterndrive MCM and Inboard MIE Tow Sports variants. These powerful petrol engines utilize Multi-Port Fuel Injection (MPI) technology, offering reliable performance for a range of marine applications. The engineering behind these Mercury MerCruiser units is designed for durability and efficiency, making them a trusted choice for boat owners and operators. This comprehensive service and repair manual, version #31, provides essential information for maintaining and troubleshooting your Mercury MerCruiser MPI engine. It includes detailed step-by-step instructions, illustrations, diagrams, and necessary pictures covering general information, maintenance, troubleshooting, and extensive repair procedures. Designed for both do-it-yourself enthusiasts and experienced mechanics, this manual is an indispensable resource for ensuring optimal engine performance and longevity.