Yamaha F250BETX v2 Owner's Manual

Yamaha F250BETX manual cover
Pages 122
Year 2009
Language(s)
English en

Yamaha F250BETX Specification

The Yamaha F250BETX is a high-performance outboard engine designed for marine enthusiasts seeking power and reliability. It features a 4.2-liter V6 engine with a 24-valve double overhead camshaft configuration, ensuring optimal performance and efficiency. The engine delivers a maximum power output of 250 horsepower, making it suitable for a wide range of watercraft applications.

Incorporating Yamaha's advanced technologies, the F250BETX includes features such as Variable Camshaft Timing (VCT) which enhances torque and overall acceleration. Its electronic fuel injection system ensures precise fuel delivery for improved fuel economy and reduced emissions. The engine is equipped with Yamaha's Shift Dampener System (SDS) which minimizes noise and vibration during gear shifts, providing a smoother and quieter operation.

The F250BETX boasts a robust alternator with a high output of 70 amps, delivering ample electrical power for onboard systems and accessories. It is designed with a 25-inch shaft, suitable for a variety of boat transom heights. The engine's dry weight is approximately 253 kilograms, making it relatively lightweight for its class and facilitating easier installation and handling.

For corrosion resistance, the F250BETX utilizes Yamaha's proprietary YDC-30 aluminum alloy and a five-layer paint process, ensuring longevity and durability in harsh marine environments. It is compatible with Yamaha's Command Link digital network, allowing for seamless integration with digital gauges and controls.

Overall, the Yamaha F250BETX is engineered to provide exceptional performance, reliability, and efficiency, making it an ideal choice for both recreational and commercial boating activities.

Yamaha F250BETX F.A.Q.

What is the recommended maintenance schedule for the Yamaha F250BETX?

The recommended maintenance schedule for the Yamaha F250BETX includes regular checks every 100 hours or annually, whichever comes first. Key tasks include changing the engine oil and oil filter, checking the fuel system, inspecting the propeller, checking the anodes, and flushing the cooling system. Refer to the owner's manual for a detailed schedule.

How do I troubleshoot starting issues with the Yamaha F250BETX?

Troubleshooting starting issues with the Yamaha F250BETX involves checking the battery connections, ensuring the battery is charged, inspecting the fuel system for clogs or leaks, and examining the ignition system. Ensure the kill switch is set correctly and the gear is in neutral. If problems persist, consult a professional technician.

What type of oil should be used in the Yamaha F250BETX?

The Yamaha F250BETX should use Yamalube 4M FC-W 10W-30 or 20W-40 marine engine oil. Always ensure the oil meets or exceeds the specifications outlined in the owner's manual.

How often should the water pump impeller be replaced on the Yamaha F250BETX?

It is recommended to inspect the water pump impeller annually and replace it every 300 hours or three years, whichever comes first. This ensures optimal cooling system performance and prevents engine overheating.

What steps are involved in winterizing the Yamaha F250BETX?

Winterizing the Yamaha F250BETX involves flushing the engine with fresh water, adding fuel stabilizer to the fuel system, changing the oil and filter, applying fogging oil to the cylinders, and disconnecting the battery. Store the engine in a dry, climate-controlled location.

How can I improve fuel efficiency on the Yamaha F250BETX?

To improve fuel efficiency, ensure the engine is well-maintained with regular oil changes and clean filters. Use the appropriate propeller, avoid overloading the boat, and maintain a steady cruising speed. Regularly check and clean the hull to reduce drag.

How do I perform a propeller inspection on the Yamaha F250BETX?

To inspect the propeller, remove it from the shaft and check for damage such as cracks, dents, or bends. Ensure the hub is in good condition and the propeller is balanced. Clean any debris and lubricate the shaft before reinstallation.

What are common causes of overheating in the Yamaha F250BETX?

Common causes of overheating include a clogged water intake, a faulty water pump impeller, and a malfunctioning thermostat. Inspect these components regularly and replace any faulty parts to maintain proper cooling system function.

How do I adjust the idle speed on the Yamaha F250BETX?

To adjust the idle speed, locate the idle adjustment screw on the throttle body. Turn the screw clockwise to increase the idle RPM and counterclockwise to decrease it. Refer to the owner's manual for the recommended idle speed specifications.

What should I do if the Yamaha F250BETX is vibrating excessively?

Excessive vibration can be caused by a damaged or unbalanced propeller, loose engine mounts, or fouled spark plugs. Inspect and address these components as necessary. If the issue persists, consult a professional technician for further diagnosis.