This Service Repair Manual covers the Mercury Mariner outboard motor produced between 2002 and 2007. This powerful 4-stroke outboard features Electronic Fuel Injection (EFI) and delivers 150 horsepower. Its water-cooled system and CDI ignition ensure reliable performance on the water, while the outboard lower unit with Forward, Neutral, and Reverse gears provides versatile control. Designed for demanding marine applications, the Mercury Mariner is engineered for durability and efficiency. This manual provides comprehensive guidance for maintaining and repairing your Mercury Mariner outboard. It details essential procedures for routine service, including recommended intervals and fluid capacities. Technical specifications, troubleshooting steps, and safety guidelines are also included to assist owners, mechanics, and technicians. The information within this English-language manual is intended to help ensure the longevity and optimal performance of your marine propulsion system.