This workshop service manual covers the Mercury Mariner jet drive outboard models produced between 2001 and 2008. These outboards are equipped with a 240 HP EFI Jet Drive system, featuring electronic fuel injection and a water-cooled engine, designed for reliable performance in various marine applications. The robust engineering and quality construction of the Mercury Mariner series ensure durability and efficiency on the water. This comprehensive English-language manual provides detailed guidance for owners, technicians, and mechanics. It covers essential maintenance procedures, troubleshooting steps, technical specifications, and safety guidelines necessary for the upkeep and repair of your Mercury Mariner outboard. By following the instructions within this manual, you can ensure optimal performance and longevity of your vessel's propulsion system.