This comprehensive workshop repair manual provides detailed service, maintenance, and troubleshooting information for your Mercury Mariner 25 HP Marathon Outboard engine. It covers all models, ensuring you have access to the information you need to keep your engine running smoothly. The manual includes step-by-step instructions, clear diagrams, and detailed specifications to guide you through every repair and maintenance task. From routine servicing like oil changes and spark plug replacement to more complex repairs, this manual is an essential resource for any owner or mechanic looking to perform work on their Mercury Mariner 25 HP Marathon Outboard engine.

The Mercury Mariner 25 HP Marathon is a robust and reliable outboard engine designed for small to medium-sized boats. This motor is a popular choice for fishing boats, dinghies, and small recreational craft due to its compact size, lightweight design, and impressive power output. The Marathon engine boasts a single-cylinder, four-stroke design, which ensures smooth and efficient operation. It features a manual start system and a tiller steering mechanism, making it easy to maneuver and control. The Mariner 25 HP Marathon is equipped with a 12-volt electric start system, providing a convenient and effortless start-up experience. The engine comes with a built-in fuel tank, eliminating the need for an external tank, which further adds to its portability and usability.

This engine is renowned for its durability and longevity. The Mariner 25 HP Marathon is engineered with high-quality components and materials, which contribute to its long-lasting performance. It features a corrosion-resistant aluminum alloy construction, ensuring resistance to the harsh marine environment. The engine is also known for its fuel efficiency, delivering impressive performance while minimizing fuel consumption. The Mariner 25 HP Marathon is backed by Mercury's renowned reputation for quality and reliability, making it a trusted choice for boat owners seeking a dependable and efficient outboard engine. The engine's compact size and lightweight design make it easy to transport and install, while its robust construction and efficient performance ensure years of dependable service.