This manual covers the Mercury Mariner Outboard, an 80 HP outboard engine designed for reliable performance on the water. Known for its robust engineering and efficiency, the Mariner Outboard offers a dependable power solution for various boating applications. Its water-cooled system and hydraulic power trim and tilt contribute to its operational effectiveness and user convenience, making it a trusted choice for recreational and professional use. This Factory Service Repair Manual in English provides comprehensive information for the maintenance and repair of the Mercury Mariner Outboard 80 HP. It details essential procedures, technical specifications, and troubleshooting guidance. Owners, mechanics, and technicians will find instructions for lubrication, ignition, fuel, cooling, electrical systems, and transmission, ensuring the optimal performance and longevity of the outboard engine.