This manual covers the Mercury Mariner 7.5HP Outboard motor, manufactured in 1978. Designed for reliable performance on the water, this gasoline-powered, internal combustion engine outboard motor is built for durability and efficiency. Its 7.5 horsepower output makes it suitable for a variety of boating applications, reflecting Mercury Mariner's commitment to quality engineering and dependable operation for marine enthusiasts. This comprehensive service repair manual provides detailed information for maintaining and repairing your Mercury Mariner 7.5HP Outboard. It includes step-by-step instructions for essential tasks such as oil changes, transmission swaps, and general repairs, extending to major component replacement. With hundreds of pages of English content, featuring illustrations and search functionality, this manual is an indispensable resource for owners and technicians alike, ensuring the longevity and optimal performance of your marine engine.