This repair service manual covers the Mercury Mariner 50HP / 60HP Outboard 4-Stroke engines manufactured from 2001 to the present. These water-cooled engines are designed for reliable performance and feature electronic ignition and an alternator charging system. Depending on the specific model year and version, they utilize either fuel injection or carburetors for fuel delivery and come equipped with a power trim and tilt system. The outboard gearcase offers Forward, Neutral, and Reverse gear selection. This manual provides comprehensive guidance for maintaining and repairing your Mercury Mariner outboard. It details essential procedures, including lubrication, recommended fluids, and servicing intervals. Technical specifications, troubleshooting steps, and safety guidelines are also included to assist owners, mechanics, and technicians. The information presented is designed to ensure the optimal performance and longevity of your 50HP or 60HP 4-Stroke Mercury Mariner outboard.