This manual covers the Mercury Mariner outboard motor, a 4-stroke, water-cooled engine with 15 horsepower. Designed for reliable performance, the Mariner series represents a commitment to robust engineering and dependable operation. Its fuel injection and fuel system ensure efficient power delivery, making it a capable choice for various marine applications. This comprehensive guide provides essential information for maintaining and repairing your Mercury Mariner outboard motor. It details general maintenance procedures, including periodic lubrication, and offers thorough troubleshooting guidance. Coverage extends to engine service, transmission, electrical systems with wiring diagrams, chassis, suspension, brake systems, steering, emission systems, engine control systems, restraint systems, and axle services. This manual is an indispensable resource for owners and technicians alike, ensuring the longevity and optimal performance of your vessel's propulsion system.