The Mercury Mariner Marathon 75 is a 3-cylinder outboard engine designed for marine applications, produced between 1987 and 1993. This water-cooled gasoline engine delivers 75 horsepower and features a CDI ignition system for reliable performance. Its robust engineering ensures dependable operation for various boating needs. This Workshop Service Repair Manual provides comprehensive guidance for maintaining and repairing the Mercury Mariner Marathon 75. It covers essential procedures, technical specifications, and troubleshooting information crucial for mechanical technicians. By following the detailed instructions within this manual, owners and professionals can ensure the optimal performance and longevity of their marine engine.