This comprehensive workshop service repair manual provides detailed instructions and technical specifications for servicing and maintaining your Mercury Mariner 9.9 15 HP 4 Stroke 323cc outboard motor. The manual covers a wide range of topics, including engine assembly and disassembly, lubrication systems, fuel systems, electrical systems, cooling systems, and troubleshooting common issues. With step-by-step procedures, clear illustrations, and informative diagrams, this manual empowers you to perform routine maintenance tasks, diagnose problems, and make necessary repairs with confidence.

The Mercury Mariner 9.9 and 15 HP 4-stroke outboard motors are compact and reliable powerplants designed for a wide range of recreational boating applications. These engines are part of Mercury's renowned Mariner line, known for their durability, fuel efficiency, and ease of maintenance. The 9.9 and 15 HP models share the same 323cc, single-cylinder 4-stroke engine, but differ in their horsepower output, achieved through variations in tuning and internal components. This makes them ideal for powering small fishing boats, dinghies, inflatables, and even small sailboats requiring a reliable auxiliary engine.

The Mercury Mariner 9.9 and 15 HP engines are renowned for their smooth operation, quiet running, and low emissions. Featuring a durable cast-iron cylinder block and a robust crankshaft, these engines are built to withstand the rigors of marine use. The 4-stroke design ensures efficient fuel combustion and reduced operating costs. The Mariner 9.9 and 15 HP come equipped with a variety of desirable features such as electric start and power tilt and trim on higher-end models. These features enhance user convenience and control. Their compact size and lightweight construction make them easy to handle and install on a variety of boats. The Mercury Mariner 9.9 and 15 HP 4-stroke outboard motors represent a compelling choice for boaters seeking reliable, efficient, and user-friendly power.