This manual covers the 1987 through 1993 Mercury Outboard models, specifically the 75, 90, and 115 horsepower variants. These engines are renowned for their robust construction and dependable performance, making them a popular choice for a variety of boating applications, from recreational fishing to light commercial use. The engineering behind these outboards emphasizes durability and efficiency, ensuring a reliable power source for your vessel.

The purpose of this comprehensive guide is to provide detailed information for the maintenance, repair, and servicing of your Mercury Outboard. It includes essential technical specifications, step-by-step procedures for common maintenance tasks, troubleshooting guidance for identifying and resolving issues, and important safety precautions. By utilizing this manual, owners and technicians can effectively maintain the optimal performance and longevity of their outboard motor.