This manual covers the Mercury Mariner 4, 5, and 6 HP 4-stroke outboard engines. These engines are designed for reliable performance on the water, utilizing gasoline fuel and a water-cooled system. Their robust construction and efficient 4-stroke design make them suitable for a variety of small boating applications. This comprehensive service repair manual in English provides essential information for maintaining and repairing your Mercury Mariner outboard. It details various procedures, technical specifications, and troubleshooting guidance to ensure optimal engine operation and longevity. Owners, technicians, and mechanics will find the information invaluable for routine maintenance and complex repairs.