This workshop service repair manual covers the Mercury Mariner 8 / 9.9 HP outboard motor. Designed for reliability and performance, these 4-stroke, water-cooled engines offer dependable power for various marine applications. Their robust engineering ensures consistent operation, making them a trusted choice for boaters. This comprehensive manual provides essential information for maintaining and repairing your Mercury Mariner outboard motor. It details crucial maintenance procedures, troubleshooting guides, technical specifications, and safety recommendations. By following the instructions within this document, owners and technicians can ensure the longevity and optimal performance of their engine.