This manual covers the Mercury Mariner Outboard motor, manufactured between 1990 and 2000. Designed as a reliable 2-stroke, 2-cylinder, 20hp outboard motor, it utilizes a water-cooled system and a hand rewind starter. The fuel system operates on a gasoline and oil mixture, typically at a 50:1 ratio. This outboard motor is engineered for dependable performance in marine applications. The purpose of this Factory Service Repair Manual is to provide comprehensive guidance for the maintenance and repair of your Mercury Mariner Outboard. It details procedures for general information, boating safety, tools, fuel system, ignition and electrical systems, lubrication and cooling, powerhead, lower unit, trim and tilt, remote control, and the hand rewind starter. This manual is an essential resource for owners and technicians to ensure the optimal performance and longevity of the motor.