This workshop service manual covers the Mercury Mariner 75XD HP outboard motor manufactured between 1987 and 1993. This 2-stroke, 3-cylinder outboard engine delivers 75 horsepower and features a CDI ignition system and water cooling. Engineered for reliability and performance, the Mariner series is known for its robust construction and efficient operation, making it a dependable choice for various marine applications. Its approximate weight is 245 lbs (111 kg). This manual provides comprehensive guidance for the maintenance, repair, and servicing of your Mercury Mariner 75XD HP outboard. It details essential procedures, including lubrication with 2-stroke outboard oil (TC-W3), troubleshooting common issues, and understanding technical specifications. By following the instructions and recommended service intervals outlined within, owners and technicians can ensure optimal performance, longevity, and safety of the vessel.