This document details the Mercury Mercruiser 5.0L MPI Engine, a robust internal combustion engine designed for marine applications. Featuring a V8 cylinder configuration with a cast iron block and aluminum cylinder heads, this naturally aspirated engine utilizes a Multi-Point Fuel Injection (MPI) system for efficient fuel delivery. Its 5.0-liter (302 cubic inch) displacement, combined with an Overhead Valve (OHV) valvetrain, ensures reliable performance. While specific model years are not detailed, the engineering quality and inherent reliability of the Mercury Mercruiser line are well-established, making this engine a dependable choice for various boating needs. This Factory Service Repair Manual, presented in English, provides comprehensive guidance for the maintenance and repair of the Mercury Mercruiser 5.0L MPI Engine. It covers essential areas including detailed maintenance schedules, recommended fluid types, and capacities, as well as troubleshooting procedures and diagnostic information, including wiring diagrams. The manual also contains comprehensive repair procedures for both stern drive and inboard configurations, ensuring that owners, mechanics, and technicians have the necessary information to keep the engine operating at peak performance and to address any potential issues effectively.