This service repair manual covers Mercury Mercruiser 5.0L MPI engines. These V8, naturally aspirated engines utilize Multi-Point Fuel Injection (MPI) and displace 5.0 liters (305 cubic inches). They are designed for reliable performance, typically producing around 260 horsepower and 330 lb-ft of torque, and are compatible with various Mercury MerCruiser sterndrives and inboards. The engineering quality of these engines ensures durability and optimal operation for a wide range of marine applications. This comprehensive manual provides essential information for the maintenance and repair of your Mercury Mercruiser 5.0L MPI engine. It details critical procedures, technical specifications, troubleshooting guidance, and recommended maintenance schedules, including fluid capacities and replacement intervals for spark plugs, impellers, and fuel filters. By following the instructions within this manual, owners, mechanics, and technicians can effectively maintain the engine, ensure its longevity, and achieve peak performance.