This workshop service repair manual covers the Mercury Mariner Bigfoot outboard motor, featuring a 323 cc engine displacement and a power output of 9.9 horsepower. Designed for marine applications, this outboard motor is engineered for reliability and efficient operation. Its construction emphasizes robust performance, making it suitable for a variety of boating needs. This comprehensive manual is intended for mechanical technicians and provides detailed guidance for maintaining and repairing the Mercury Mariner Bigfoot outboard motor. It covers essential procedures, technical specifications, and troubleshooting steps necessary for optimal performance and longevity. By following the instructions within this English-language guide, users can ensure the continued serviceability of their marine engine.