The Mercury Mariner, produced between 1999 and 2003, represents a robust 4-stroke outboard engine designed for reliable performance. This model features a 3-cylinder configuration with a displacement of 730cc, delivering 40 horsepower. Its water-cooled system, carbureted fuel induction, and CDI ignition ensure efficient operation. The Mariner is engineered for durability and consistent power output, making it a dependable choice for various marine applications. This Workshop Service Manual provides comprehensive guidance for the maintenance and repair of your Mercury Mariner outboard engine. It covers essential procedures, technical specifications, and troubleshooting steps necessary for optimal performance and longevity. Inside, you will find detailed information on scheduled maintenance, fluid capacities, propeller specifications, and electrical systems. This manual is an indispensable resource for owners, technicians, and mechanics seeking to understand and maintain their Mariner engine.