This comprehensive service manual provides detailed maintenance and repair procedures for the MERCURY MARINER 30 HP MARATHON 2 CYL OUTBOARD MOTOR with serial numbers 0G044027 and above. The manual covers a wide range of topics, including engine disassembly and assembly, troubleshooting, electrical systems, fuel systems, lubrication systems, cooling systems, and more. With clear illustrations and step-by-step instructions, this manual is an invaluable resource for both professional technicians and DIY enthusiasts looking to maintain and repair their MERCURY MARINER 30 HP MARATHON 2 CYL OUTBOARD MOTOR.

The Mercury Mariner 30 HP Marathon, model number 0G044027 and above, is a reliable and robust two-cylinder outboard motor designed for a wide range of boating applications. This engine is known for its smooth operation, impressive power output, and ease of maintenance. The Marathon line is specifically geared towards providing dependable performance for recreational boaters, offering an optimal balance between power and fuel efficiency. The 30 HP model is particularly suited for smaller boats, such as dinghies, pontoon boats, and small fishing boats, and can comfortably handle a variety of water conditions. With its durable construction and user-friendly design, the Mercury Mariner 30 HP Marathon is a popular choice for boaters seeking a reliable and easy-to-use outboard motor. The engine features a compact and lightweight design, making it easy to install and transport. Its 2-cylinder configuration delivers smooth and efficient performance, while the high-quality materials and precise engineering ensure a long service life. The Marathon series engines are also known for their cold-weather starting capabilities and low fuel consumption, making them a practical and economical option for many boating enthusiasts. The engine boasts a range of advanced features, including a tilt steering system, a robust gearcase, and a user-friendly control panel, enhancing its overall functionality and usability.