This workshop service repair manual covers all models of the Mercury Mariner 50 HP Outboard, designed for reliable performance on the water. Engineered for a wide range of boating applications, these outboards are known for their robust construction and efficient power delivery. This manual provides comprehensive information to ensure the optimal operation and longevity of your Mercury Mariner outboard. The purpose of this manual is to serve as a complete guide for maintenance, repair, and troubleshooting. It details all aspects of the Mercury Mariner 50 HP Outboard, including engine specifications, lubrication requirements, ignition systems, cooling procedures, and drivetrain components. By following the procedures outlined within, owners, technicians, and mechanics can effectively maintain and service their outboards, ensuring peak performance and safety.