This workshop service repair manual covers all Mercury Mariner outboard models, featuring 15 HP gasoline engines. Designed for reliable performance, these water-cooled engines are built to provide dependable power for a variety of marine applications. The engineering quality ensures robust operation, making the Mercury Mariner a trusted choice for boaters seeking efficiency and durability on the water. This comprehensive manual provides essential information for the maintenance, repair, and troubleshooting of your Mercury Mariner outboard. It details procedures for routine service, lubrication, and component replacement, addressing common issues such as starting problems, performance degradation, and overheating. With clear instructions and technical specifications, this guide empowers owners, mechanics, and technicians to keep their Mercury Mariner engine operating at peak condition.