This manual covers the Mercury Mariner 70, 75, 80, 90, 100, and 115 HP Outboard models. These engines are designed for marine applications, offering a range of horsepower to suit various boating needs. While specific production years are not detailed, the engineering of these outboards is intended to provide reliable performance on the water. Some models feature a 3-cylinder engine configuration, and the manual addresses key systems such as ignition, fuel, and oil injection. This comprehensive Factory Service Repair Manual, written in English, provides detailed guidance for maintaining and repairing your Mercury Mariner outboard. It includes step-by-step repair procedures, troubleshooting fault diagnosis, wiring diagrams, and information on common fixes. The manual covers essential components and systems including the lower unit, power trim and tilt, installation, and controls. With hundreds of pages of information, including illustrations and drawings, this manual is an indispensable resource for owners, mechanics, and technicians.