This manual covers the Mercury Mariner 50 HP Bigfoot outboard motor, a robust 4-stroke engine designed for reliable performance in various marine applications. Engineered for durability and efficiency, this outboard motor is a testament to Mercury's commitment to quality. Its Bigfoot gear housing is specifically designed to provide enhanced torque and thrust, making it ideal for heavier loads or demanding operational conditions. This model offers a powerful and dependable solution for boaters seeking consistent performance on the water. The purpose of this comprehensive Service Repair Workshop Manual is to provide detailed guidance for the maintenance, repair, and troubleshooting of your Mercury Mariner outboard motor. It includes essential information on routine maintenance procedures, engine specifications, electrical systems, and structural components. Detailed instructions and diagrams are provided to assist owners, technicians, and mechanics in performing all necessary service operations, ensuring the longevity and optimal functioning of the motor.