Yamaha F2.5AMHS Owner's Manual

Yamaha F2.5AMHS manual cover
Pages 66
Year 2006
Language(s)
English en

Yamaha F2.5AMHS Specification

The Yamaha F2.5AMHS is a compact and efficient portable outboard motor designed for small watercraft, offering a blend of power, portability, and reliability. It is equipped with a 2.5 horsepower, single-cylinder, 4-stroke engine that delivers smooth and quiet operation while maintaining excellent fuel efficiency. The engine displacement is 72cc, which contributes to its lightweight and compact design, making it easy to transport and ideal for small boats, dinghies, and tenders.

The motor features a manual pull start system and a 360-degree steering rotation, allowing for exceptional maneuverability and ease of handling in tight spaces. Its integrated fuel tank has a capacity of 0.9 liters, optimized to provide sufficient run time without adding unnecessary weight. The F2.5AMHS includes a water-cooling system with a thermostat for consistent engine temperature, enhancing performance and longevity.

Yamaha emphasizes durability with a corrosion protection system, including a freshwater flush device to simplify maintenance and extend the motor's lifespan. The outboard's design incorporates a large, ergonomic carrying handle, making it convenient to carry and install. Additionally, it has a built-in shallow water drive feature, enabling navigation in shallow environments without damaging the propeller or the marine ecosystem.

Weighing approximately 17 kg, the Yamaha F2.5AMHS is one of the lightest in its class, ensuring easy portability and mounting. This model adheres to strict emission standards, reflecting Yamaha's commitment to environmentally friendly technology. The F2.5AMHS is an excellent choice for boaters who need a reliable, lightweight, and efficient outboard motor for recreational use, offering the perfect balance of performance and convenience.

Yamaha F2.5AMHS F.A.Q.

How do I properly start the Yamaha F2.5AMHS outboard engine?

To start the Yamaha F2.5AMHS, first ensure the fuel valve is open and the engine is in neutral. Pull the choke out if the engine is cold. Pull the starter rope briskly until the engine starts. Push the choke back in once the engine warms up.

What should I do if the Yamaha F2.5AMHS engine doesn't start?

Check the fuel supply to ensure there is enough fuel and the fuel valve is open. Inspect the spark plug for fouling or damage and clean or replace it if necessary. Confirm that the engine is in neutral. If the problem persists, consult the user manual or a professional technician.

How often should I perform maintenance on the Yamaha F2.5AMHS?

Routine maintenance, such as checking the oil level, should be performed before each use. Regular maintenance, like changing the oil and inspecting the propeller, should be done every 50 hours of operation or at least once a year.

What type of oil is recommended for the Yamaha F2.5AMHS?

Yamaha recommends using Yamalube 4M FC-W 10W-30 or 20W-40 engine oil for optimal performance and protection. Always refer to your owner's manual for the most accurate information.

How do I troubleshoot overheating issues in the Yamaha F2.5AMHS?

First, check if the water intake is blocked by debris. Ensure the cooling system is functioning properly by inspecting the water pump and thermostat. It's also important to confirm that the engine oil level is adequate.

What are the steps to winterize the Yamaha F2.5AMHS?

To winterize, first drain the fuel system, then change the engine oil and remove the spark plug to add a few drops of oil into the cylinder. Pull the starter rope to distribute the oil. Finally, store the engine in an upright position in a dry place.

How can I improve the fuel efficiency of my Yamaha F2.5AMHS outboard?

Ensure the propeller is in good condition and of the correct size, perform regular maintenance, and operate the engine at optimal RPMs. Avoid carrying unnecessary weight and ensure the boat is balanced.

What is the correct spark plug gap for the Yamaha F2.5AMHS?

The correct spark plug gap for the Yamaha F2.5AMHS is typically 0.6-0.7 mm. Refer to the owner's manual for exact specifications and always use a feeler gauge to measure the gap accurately.

How do I replace the propeller on the Yamaha F2.5AMHS?

To replace the propeller, first remove the cotter pin and then the propeller nut. Slide off the old propeller and replace it with the new one. Reinstall the nut and secure it with a new cotter pin.

What are common issues with the Yamaha F2.5AMHS and how can they be resolved?

Common issues include starting problems, overheating, and poor performance. Solutions involve checking the fuel system, ensuring proper cooling, and performing regular maintenance. Consult the manual for troubleshooting steps specific to each issue.