This document pertains to the Mercury Mariner outboard motor, available in 4, 5, and 6 horsepower variants. These engines are typically 4-stroke, water-cooled, and utilize a CDI or similar electronic ignition system with carburetor-based fuel delivery. They are designed for a variety of small watercraft applications, offering reliable performance and efficient operation. Common configurations include tiller or remote control, with options for short and long shafts to suit different boat hulls. This comprehensive workshop service repair manual provides detailed information for maintaining and repairing your Mercury Mariner outboard motor. It covers all essential procedures, from routine maintenance tasks such as lubrication and spark plug replacement to more in-depth repairs. The manual includes technical specifications, troubleshooting guides, and safety information, ensuring that owners and technicians have the resources needed to keep the engine operating at peak performance and reliability.