This workshop service repair manual covers the Mercury Mariner Sailpower 9.9 HP outboard engine. Engineered for reliability and performance, this water-cooled, carburetor-fed engine is designed for marine applications, offering dependable power for various boating needs. Its robust construction and user-friendly design, including a manual tilt trim system and CDI ignition, make it a practical choice for recreational and professional use. This comprehensive manual provides essential information for maintaining and repairing your Mercury Mariner Sailpower. It details critical procedures, technical specifications, and troubleshooting guidance for owners and technicians alike. Coverage includes engine operation, fuel system requirements, lubrication specifications, and safety features, ensuring optimal performance and longevity of your outboard engine.