This comprehensive workshop repair manual provides in-depth instructions and step-by-step diagrams for servicing and repairing your Mercury MarineR 50HP Marathon Sea Pro 2 Stroke outboard motor, covering models from 1997 onwards. It's the same manual used by authorized Mercury dealers, ensuring you have access to the most accurate and complete information available. This essential resource contains detailed procedures for every aspect of maintenance and repair, from basic tasks like changing spark plugs to complete engine rebuilds. You'll find clear electrical diagrams, precise torque settings, fluid capacities, and more. This manual is your one-stop shop for all your Mercury outboard motor repair needs, allowing you to confidently tackle any service or repair job with the same level of expertise as professional technicians.

The Mercury MarineR 50HP Marathon Sea Pro 2-stroke outboard motor, produced from 1997 onwards, represents a reliable and powerful engine option for smaller boats. This engine, known for its robust build and impressive performance, was a popular choice among recreational boaters and commercial fishermen alike. The Marathon Sea Pro name signifies a durable and dependable engine designed to withstand the rigors of saltwater environments. The 50HP output, while modest compared to larger outboards, provides sufficient power for a variety of uses, including fishing, cruising, and watersports. The 2-stroke design, while less fuel-efficient than modern 4-stroke engines, was known for its lighter weight, simplicity, and responsive acceleration. This engine featured a variety of features aimed at improving performance and ease of use, including a robust powerhead, a reliable ignition system, and a well-designed cooling system. It also employed a manual start system, eliminating the need for bulky and complex electric starters. The Mercury 50HP Marathon Sea Pro was a popular choice for boaters seeking a reliable, powerful, and relatively affordable outboard motor for a range of boating activities.