This manual covers Mercury Outboard engines manufactured between 1986 and 2003, encompassing models from 6 to 15 horsepower. These 2-stroke, water-cooled engines are designed for reliability and performance, featuring inline configurations and either carbureted or multi-point sequential electronic fuel injection. Their robust engineering ensures dependable operation for a variety of marine applications. This comprehensive service and repair manual provides essential information for maintaining and troubleshooting your Mercury Outboard. It details all aspects of engine care, including recommended maintenance schedules, fluid capacities, spark plug specifications, and detailed procedures for component replacement and adjustment. With clear instructions and diagrams, this manual is an indispensable resource for owners and technicians alike, ensuring optimal performance and longevity of the engine.