This comprehensive repair manual provides detailed instructions and technical information for a wide range of Mercury outboard motors. It covers models ranging from 2.5 HP to 225 HP, encompassing years 2001 through 2005. This manual is an invaluable resource for both experienced mechanics and DIY enthusiasts, offering step-by-step guidance on a multitude of repair and maintenance tasks. From routine servicing like oil changes and filter replacements to more complex procedures like engine removal and rebuilding, you'll find the information you need to keep your Mercury outboard running smoothly. The manual covers key components and systems including:

* General Information
* Routine Maintenance
* Engine Removal and Installation
* Fuel System
* Lubrication and Cooling System
* Engine Specifications
* Transmission, Drive Chain & Sprockets
* Steering System
* Shocks
* Body Work
* Intake & Exhaust
* Electrical System
* Advanced Troubleshooting

With this repair manual, you can confidently tackle any repair or maintenance project on your Mercury outboard, saving time and money in the process.

The Mercury Mariner 2.5-225HP 2 Stroke outboard motor, produced from 2001 to 2005, is a powerful and reliable engine designed for serious boating enthusiasts. This model is renowned for its exceptional performance, capable of reaching speeds of up to 50 mph depending on the boat it's attached to. The 2.5-liter, 2-stroke engine generates an impressive 225 horsepower, making it ideal for fishing, waterskiing, and other high-performance activities. A notable feature of this model is its durable construction, boasting a robust cast-iron powerhead and a corrosion-resistant aluminum lower unit, ensuring longevity even in harsh marine environments.

The Mariner 2.5-225HP 2 Stroke is equipped with a range of advanced technologies designed for optimal performance and efficiency. Notably, it incorporates Mercury's proprietary "OptiMax" technology, which utilizes a direct-injection fuel system for increased fuel economy and reduced emissions. The engine also benefits from a sophisticated electronic ignition system for enhanced starting and smooth operation. However, like most 2-stroke engines, it requires a dedicated oil-gas mixture for lubrication. The Mariner 2.5-225HP 2 Stroke is a powerful and reliable engine option for boaters seeking high-performance and efficient operation. While its 2-stroke design necessitates a specific oil-gas mixture, its advanced features and construction make it a compelling choice for those demanding robust and reliable performance on the water.