This workshop service repair manual covers the Mercury Mariner 75 HP outboard motor, part of the Marathon generation. This inline 3-cylinder, 1470 cc, water-cooled, 2-stroke engine delivers 75 horsepower at 5000-6000 RPM and features a carbureted fuel induction system, CDI ignition, and an alternator with 10 amps charging output. Designed for reliable performance on the water, this outboard motor is equipped with a power trim and tilt system and an outboard lower unit with a 1.83:1 gear ratio. It is recommended to use 87 octane unleaded gasoline and NMMA TC-W3 certified 2-stroke oil for the gearcase, which holds 24.6 oz (727 ml). This comprehensive English-language manual provides detailed information essential for the maintenance and repair of your Mercury Mariner outboard motor. It includes procedures for routine maintenance, such as spark plug and fuel filter replacement at recommended intervals, along with troubleshooting guides and technical specifications. The manual is intended for mechanical technicians and owners alike, offering clear instructions and diagrams to ensure the longevity and optimal performance of the engine. By following the guidelines within this manual, users can effectively service and maintain their outboard motor.