This workshop service repair manual covers the Mercury Mariner 50 HP outboard engine. Designed for marine propulsion, this 4-stroke, water-cooled gasoline engine delivers 50 horsepower. While specific model years and generations are not detailed, the manual provides comprehensive information for maintaining and repairing this reliable marine power unit, ensuring optimal performance and longevity on the water. This manual serves as an essential resource for owners, mechanics, and technicians. It details critical maintenance procedures, troubleshooting guides, and technical specifications necessary for the upkeep of the Mercury Mariner 50 HP. Coverage includes engine systems, fuel delivery, electrical components, and transmission, empowering users with the knowledge to perform routine servicing and complex repairs effectively and safely.