This manual covers the Mercury Marine 4, 5, and 6 horsepower 4-Stroke outboard motors. These engines are designed for reliability and efficient operation, suitable for a range of recreational and light commercial applications. Their robust construction and 4-stroke cycle OHV engine configuration ensure dependable performance and fuel economy. This comprehensive workshop service and repair manual, along with the owner's manual, provides detailed information for maintaining and repairing your Mercury Marine outboard. It includes general information, specifications, maintenance procedures, troubleshooting guidance, and detailed illustrations, diagrams, and pictures. This resource is intended for both DIY enthusiasts and professional mechanics to ensure optimal performance and longevity of the engine.