This manual covers the Mercury Mariner Outboard, an outboard engine designed for marine propulsion. It features a water-cooled system and delivers 100 HP. The Mercury Mariner Outboard is engineered for reliable performance on the water, offering a robust solution for various boating needs. Its durable construction and efficient operation make it a dependable choice for professional use. This Service Repair Manual provides comprehensive information essential for the maintenance and repair of the Mercury Mariner Outboard. It details critical procedures, technical specifications, and diagnostic guidance for professional technicians. By following the instructions within this manual, users can ensure the optimal performance, longevity, and safety of their Mercury Mariner Outboard engine.