This workshop service manual covers the Mercury Mariner outboard motor, a 4-stroke, water-cooled engine with an outboard drive system and a power output of 9.9 HP. Designed for reliable performance, this engine is built with quality engineering to meet the demands of various marine applications. Its robust construction and efficient design ensure dependable operation for boaters. This comprehensive manual provides detailed information essential for the maintenance, repair, and troubleshooting of your Mercury Mariner outboard motor. It includes step-by-step procedures, technical specifications, and safety guidelines to assist owners, mechanics, and technicians in keeping the engine in optimal condition. The English language manual contains 251 pages of expert guidance.