This manual covers the Mercury Mariner outboard engine, specifically models produced between 2002 and 2007. These 4-stroke, water-cooled engines are equipped with Electronic Fuel Injection (EFI) and a Capacitor Discharge Ignition (CDI) system, delivering up to 175 horsepower from their approximately 2.5L displacement. Designed for reliable performance on the water, the Mariner series is engineered for durability and efficiency, featuring a power trim and tilt system for optimal operation and a robust outboard gearcase transmission. This comprehensive Service Repair Manual provides essential information for the maintenance and repair of your Mercury Mariner outboard. It details critical procedures, technical specifications, and troubleshooting guidance. Inside, you will find information on lubrication, recommended fuel and oil types, scheduled maintenance intervals, electrical system details, and propeller specifications. This manual is an indispensable resource for owners, technicians, and mechanics seeking to ensure the longevity and optimal performance of their Mercury Mariner engine.