This manual covers the Mercury Mariner 75XD HP outboard motor, produced between 1987 and 1993. This early generation model features a 3-cylinder, water-cooled engine with a carbureted fuel delivery system, producing 75 horsepower. Designed for reliable performance, the 75XD HP utilizes a CDI ignition system and a propeller drive via an outboard lower unit. Its robust construction and straightforward engineering make it a dependable choice for various marine applications. This Factory Service Repair Manual provides comprehensive information for the maintenance, repair, and troubleshooting of your Mercury Mariner 75XD HP. It details essential procedures for routine servicing, including recommended oil types and capacities, spark plug specifications, and water pump impeller replacement intervals. Technical specifications, electrical system details, and trim system adjustments are also covered. This guide is an indispensable resource for owners, mechanics, and technicians seeking to ensure the optimal performance and longevity of their outboard motor.