This workshop service manual covers the Mercury Mariner outboard engine, manufactured between 2002 and 2007. This robust 4-stroke engine features Electronic Fuel Injection (EFI) for efficient fuel delivery and produces 200 horsepower. Its water-cooled system and CDI ignition ensure reliable performance in marine environments. Designed for demanding aquatic use, the Mariner is engineered for durability and consistent power output. This comprehensive manual provides detailed information for the repair and overhaul of your Mercury Mariner engine. It includes essential technical specifications, maintenance schedules, lubrication requirements for both the engine and gearcase, and guidance on electrical components such as the alternator and spark plugs. By following the procedures outlined within, owners and technicians can effectively maintain and repair the engine, ensuring its longevity and optimal operational efficiency.