The 1997 Mercury Mariner 125 HP outboard motor is a robust and reliable engine designed for a variety of marine applications. Featuring a 4-cylinder, 1967cc (120ci) water-cooled engine with electronic ignition and a carbureted fuel system, it delivers 125 horsepower. This model is equipped for remote steering and boasts an alternator output of 16 amps, ensuring consistent power for onboard systems. Its engineering prioritizes performance and durability, making it a dependable choice for boaters seeking efficient and powerful propulsion. This Factory Service Repair Manual provides comprehensive guidance for the maintenance and repair of your 1997 Mercury Mariner 125 HP outboard motor, serial number range 0G438000 and above. It covers essential procedures, technical specifications, and troubleshooting steps necessary to keep your engine operating at peak performance. Inside, you will find detailed information on lubrication, cooling systems, electrical components, and more, enabling owners and technicians to perform routine servicing and address potential issues effectively.