This workshop repair service manual covers the Mercury Mariner outboard engine, a reliable and well-engineered 4-stroke motor designed for a variety of boating applications. This particular model features a 5 HP engine with a single cylinder and a displacement of approximately 112 cc, offering efficient power for its class. Its water-cooled system, CDI ignition, and standard carburetor ensure consistent performance, while the Forward-Neutral-Reverse gear shift and outboard drive system provide versatile operation. Available in both short and long shaft configurations, the Mercury Mariner is built for dependable service on the water. This comprehensive manual provides essential information for the maintenance, repair, and troubleshooting of your Mercury Mariner outboard engine. It details critical procedures, including recommended oil and fuel types, gear lube capacity, and specific spark plug requirements. Technical specifications, such as engine performance data and physical dimensions, are also included. By following the guidelines within this manual, owners and technicians can ensure the longevity and optimal performance of their Mercury Mariner engine, covering all models in English.