This manual covers the Mercury Mariner 7.5HP Outboard motor, manufactured in 1981. Designed as an internal combustion outboard motor, this model delivers 7.5 horsepower, making it suitable for a variety of marine applications. The engineering behind this outboard motor emphasizes reliability and performance, ensuring a dependable experience on the water. This service manual provides comprehensive information for owners and technicians alike, detailing the intricacies of this specific marine propulsion system. The purpose of this Service/Shop Repair Manual is to provide detailed instructions for the maintenance and repair of the Mercury Mariner 7.5HP Outboard motor. It covers every aspect of the unit, from routine oil changes to more complex transmission swaps, offering step-by-step guidance and replicating factory technician knowledge. With numerous illustrations and easy-to-read text, this manual empowers users to make informed decisions regarding their motor's upkeep and repair, ensuring its longevity and optimal performance.