This manual covers the Mercury Mariner 8 HP 2-Stroke outboard motor, manufactured between 1986 and 2003. Designed for reliable performance, this water-cooled, 2-stroke gasoline engine with CDI ignition delivers 8 horsepower. Its robust construction and efficient design make it suitable for a variety of small boat applications. The outboard motor features a gearcase drive system and is engineered for dependable operation in marine environments. This Full Service Repair Manual provides comprehensive guidance for the maintenance and repair of your Mercury Mariner 8 HP 2-Stroke outboard motor. It details essential procedures, technical specifications, and troubleshooting steps necessary to keep your engine running optimally. Coverage includes lubrication, scheduled maintenance intervals for critical components like spark plugs and water pump impellers, fuel system servicing, and lower unit gear oil changes. This manual is an indispensable resource for owners and technicians seeking to ensure the longevity and performance of their Mercury Mariner outboard.