This manual covers Mercury Mariner outboard engines manufactured between 1990 and 2000, specifically the 3-cylinder, 2-stroke models available in 60hp, 75hp, and 90hp configurations. These engines are known for their robust construction and reliable performance, making them a popular choice for a variety of marine applications. This documentation provides in-depth information to ensure these engines operate at peak efficiency and longevity. The purpose of this Service Repair Workshop Manual is to provide comprehensive guidance for the maintenance, servicing, and repair of your Mercury Mariner outboard engine. It includes detailed procedures, troubleshooting steps, technical specifications, and essential safety information. Whether you are performing routine maintenance or complex repairs, this manual serves as an indispensable resource for owners, mechanics, and technicians alike, ensuring proper upkeep and operational integrity.