This document provides comprehensive technical information for the Mercury Mariner 4 HP 4-stroke outboard motor. Engineered for reliability and performance, this outboard motor is designed to meet the demands of various marine applications. Its robust construction and efficient 4-stroke engine deliver consistent power and smooth operation, making it a dependable choice for boaters seeking quality and durability on the water. This workshop repair service manual covers all modes of the Mercury Mariner 4 HP outboard motor. It is designed to assist owners, technicians, and mechanics in performing essential service and maintenance tasks. The manual includes detailed procedures for troubleshooting, technical specifications, and operational guidelines, ensuring the vehicle remains in optimal condition. By following the instructions within this manual, users can effectively maintain and repair their Mercury Mariner outboard motor.