This workshop service repair manual provides comprehensive information for the Mercury Mariner MAG10 outboard motor. Designed for marine applications, this gasoline-powered, water-cooled engine features a CDI ignition system and offers both electric and manual starting options. Its transmission system includes a lower unit with forward, neutral, and reverse gears, and it is equipped with an outboard propeller. The Mariner MAG10 is engineered for reliability and performance on the water. This manual serves as an essential resource for owners, technicians, and mechanics. It details maintenance procedures, including lubrication with marine gear lubricant, and outlines replacement intervals for key components such as spark plugs, fuel filters, and water pump impellers. The manual also covers technical specifications, troubleshooting guides, and safety precautions necessary for the proper upkeep and repair of the Mercury Mariner MAG10, ensuring its continued operational efficiency and longevity.