This Service Repair Manual covers the 1996 Mercury Mariner outboard motor, specifically models with serial numbers 0G301751 and above. This robust 90 HP, 3-cylinder, 1237 cc (75.5 cubic inches) engine features a carbureted fuel system and a CDI ignition for reliable performance. Engineered for demanding marine environments, the Mariner is designed for durability and efficiency, making it a trusted choice for various watercraft applications. Its water-cooled system and commitment to quality engineering ensure consistent operation. This manual provides comprehensive guidance for the maintenance, repair, and technical understanding of your 1996 Mercury Mariner outboard. It details essential procedures, including scheduled maintenance for spark plugs, water pump impellers, and gearcase lubrication, along with specifications for fuel filters and charging system output. Owners, technicians, and mechanics will find detailed information on troubleshooting, technical data, and safety protocols necessary to keep this outboard motor in optimal condition and ensure its longevity.