This workshop service repair manual covers the Mercury Mariner Sea Pro outboard engine, a robust and reliable power unit designed for a variety of marine applications. Featuring a 75 horsepower output, this 3-cylinder, 1.6-liter engine utilizes Electronic Fuel Injection (EFI) for efficient fuel delivery and a CDI ignition system with electronic advance for optimal performance. Its water-cooled design ensures consistent operation, while the Forward-Neutral-Reverse (F-N-R) gearbox with a 2.00:1 gear ratio provides versatile control. Engineered for durability and consistent performance, the Mariner Sea Pro series is a testament to Mercury's commitment to quality marine propulsion. This comprehensive manual provides essential information for the maintenance, repair, and troubleshooting of your Mercury Mariner Sea Pro outboard engine. It details critical specifications, including engine type, power output, cylinder count, displacement, and fuel system details such as fuel type and minimum octane rating. Maintenance procedures, recommended oil types, fluid capacities, and spark plug gap are clearly outlined, along with performance data like the full throttle RPM range. This English-language resource is designed to assist owners, technicians, and mechanics in ensuring the longevity and optimal functioning of their Mercury Mariner Sea Pro engine.