This document pertains to the Mercury Mariner, an outboard engine designed for marine applications. While specific production years are not detailed, the Mariner is recognized for its robust engineering and reliability. This particular variant, the Big Foot, likely offers enhanced performance characteristics, such as increased thrust or durability, making it suitable for a variety of boating conditions and vessel types. This comprehensive workshop service manual provides essential information for the maintenance and repair of the Mercury Mariner. It covers critical areas including detailed procedures, technical specifications, and troubleshooting guidance. The manual serves as an indispensable resource for owners, mechanics, and technicians, ensuring the optimal performance and longevity of the water-cooled outboard engine.