This workshop service manual covers the Mercury Mariner, a 4-stroke outboard engine designed for reliable performance. Featuring a 323 cc displacement and producing 9.9 HP, this water-cooled, spark ignition engine utilizes a carburetor for fuel delivery and an outboard gearcase transmission. Its robust engineering ensures dependable operation for various marine applications. This comprehensive English-language manual provides essential information for maintaining and repairing the Mercury Mariner. It details critical procedures, technical specifications, and troubleshooting guidance. Owners, mechanics, and technicians will find the 373-page document invaluable for ensuring the longevity and optimal performance of their Mercury Mariner engine.