The Mercury Mariner 30 Sea Pro is a robust 2-cylinder outboard engine designed for reliable performance. Featuring a carbureted fuel system, CDI ignition, and water cooling, this engine delivers 30 horsepower. It offers both electric and manual starting options and a versatile Forward-Neutral-Reverse gearcase. This model is engineered for durability and efficiency, making it a dependable choice for various marine applications. This Workshop Service Repair Manual provides comprehensive guidance for the Mercury Mariner 30 Sea Pro. It covers essential maintenance procedures, including lubrication, spark plug replacement, and fuel system requirements, along with detailed troubleshooting steps for diagnosing and resolving issues. Technical specifications and service procedures are outlined to assist owners, mechanics, and technicians in maintaining the optimal performance and longevity of the engine.