This manual covers the Mercury Mariner outboard motors manufactured between 1986 and 2003. These reliable 2-stroke engines, available in displacements ranging from 6 HP to 15 HP, are engineered for dependable performance. The Mercury Mariner series is known for its robust construction and straightforward operation, making it a popular choice for a variety of boating applications. This documentation provides essential information for understanding and maintaining these versatile outboard powerplants. The purpose of this Factory Service Repair Manual is to provide comprehensive guidance for the maintenance, repair, and troubleshooting of your Mercury Mariner outboard. It includes detailed procedures for all major systems, technical specifications, diagnostic information, and wiring diagrams. By utilizing the information within this manual, owners and technicians can ensure optimal performance, longevity, and safety of the Mercury Mariner. The manual is designed to facilitate DIY repairs, saving costs and fostering a deeper understanding of the engine's mechanics.