This workshop service repair manual covers Mercury Mariner Outboard motors manufactured between 1984 and 2000. These engines, ranging from 2.5 HP to 275 HP, are known for their robust engineering and reliability, designed to meet a variety of marine applications. This manual provides comprehensive information to ensure the optimal performance and longevity of your Mercury Mariner outboard. The purpose of this manual is to serve as a definitive guide for maintenance, repair, and troubleshooting. It details essential procedures for the engine mechanical and electrical systems, fuel system, transmission, drivetrain, steering, brakes, body, and emission control systems. Safety guidelines and information on restraint systems are also included, making this an indispensable resource for owners, technicians, and mechanics seeking to maintain and service their Mercury Mariner outboard motors effectively.