This workshop service repair manual covers Mercury Marine 75hp Marathon, 75hp Seapro, and 75hp XD outboard engines manufactured between 1987 and 1993. These robust inline 3-cylinder engines, displacing 1470 cc and producing 75 horsepower, are known for their reliable water-cooled operation and CDI ignition systems. Designed for demanding marine environments, they feature carburetor fuel induction and offer lubrication via pre-mixed fuel and oil or an oil injection system. Available with long or extra-long shaft lengths, these engines represent a dependable choice for various boating applications. This comprehensive English-language manual provides essential information for the maintenance, repair, and servicing of your Mercury Marine outboard engine. It details critical procedures, technical specifications, and troubleshooting guidance, covering aspects such as spark plug replacement, gearcase oil changes, and fluid capacities. By following the instructions within this manual, owners and technicians can ensure optimal performance, longevity, and safety of the 75hp series engines.