This service repair manual covers Mercury Mariner Outboard models manufactured between 1984 and 2000. These outboards are known for their robust engineering and reliability, offering a wide range of horsepower from 2.5 HP to 275 HP, suitable for various boating applications. The transmission system features Forward, Neutral, and Reverse gears, ensuring versatile operation on the water. This comprehensive manual provides detailed information for maintaining and repairing your Mercury Mariner Outboard. It includes procedures for general maintenance, troubleshooting, engine and transmission service, cooling systems, fuel injection, electrical systems, and periodic lubrication. The manual also covers braking, steering, wiring diagrams, engine control, emissions, chassis, suspension, axles, and restraint systems. Its purpose is to empower owners and technicians with the knowledge to perform repairs, ensuring the longevity and optimal performance of the outboard.