How often should you change the impeller on a Yamaha outboard?

At Matson Point S, we recommend an impeller replacement every 100 hours of operation. It can take a long time to clock 100 hours, so we also recommend that the impeller is replaced every other year for the majority of outboards and sterndrives.

How do I know if I need to replace my impeller?

Inspect for signs of leakage around the pump housing – if you see leakage there, it’s time for replacement. Many boating experts recommend replacing the impeller once a year no matter what, as a notable amount of wear can still occur, but not be enough to cause the telltale leak.

How often should water impeller be replaced?

At a minimum, you should replace your impeller according to your manual – for example, every 200 hours. Over time, the vanes become rigid and work less effectively, and you may see your engine overheating.

How often should you replace water pump on Yamaha outboard?

Changing the water pump on your outboard motor is an important part of your boat’s regular maintenance. You should change your water pump every 200 hours, roughly once every two years or every other 100-hour service.

How often should you change the impeller on a Yamaha outboard? – Related Questions

What is the life expectancy of a Yamaha outboard?

Boater owners committed to regular maintenance will also often ask, “How many hours will a Yamaha outboard last?” While Yamaha makes a diverse line of outboard motors, most models will last 1,500 – 3,000 hours depending on how often it is maintained, stored, and used.

Why do outboard impellers fail?

Abrasive sandlike material can cause the impeller to wear out faster. Impellers can also wear out by becoming stiff and brittle due to the motor sitting unused for several seasons or being exposed to heat. Water lubricates the impeller, and if it’s run dry, the impeller can be ruined in a few seconds.

How often should an outboard water pump be replaced?

Instead, replacing the water pump impeller every three years or sooner should avoid most water-pump-related issues and keep your outboard running in excellent condition. However, if you’ve noticed persistent problems keeping your engine cool, you may need to replace the water pump completely.

When should I replace my boat water pump?

Typically, water pumps and thermostats should be serviced every two to three years. This varies on where you do most of your boating. Also, whether you rinse out your motor after every use could make a difference.

What is the life expectancy of a water pump?

The expected lifespan of a water pump is 60,000 miles to 90,000 miles, but many can last longer than that. Usually, once your car has reached the coveted 100,000 miles, you can plan on the need for a pump replacement soon. Sometimes, this cooling system part will give you signs that it needs to be replaced.

How long should a water pressure pump last?

The average lifespan of a well pump is generally around eight to 15 years. However, where your pump will fall in that pretty wide age range depends on many factors. The single largest factor in your pump’s life expectancy is the frequency of your pump’s duty cycle.

What are the signs of a worn out water pump?

6 signs your water pump is failing ​
  • Coolant Leak. The water pump has several gaskets that can be damaged or worn out over time.
  • Engine Overheating.
  • High Pitched, Harmonic Whining Noises.
  • Water Pump Rust and Corrosion.
  • Steam comes out from under your hood.
  • Holes or leakage system on the dry side of the water pump.

What causes water pressure pump failure?

Pump impellers and seals may fail and foreign matter and debris from the tank can clog the pump internals. Low water levels in the tank can also cause run dry failure. If your pump/motor system stops running you may have an electrical fault or foreign matter seizure. These problems are often economically repairable.

How do I know if my water pump is dying?

Five Signs You Need a New Water Pump
  1. Leaking Coolant. A coolant leak coming from the front and center is probably coming from the water pump.
  2. Rust and Corrosion. Age doesn’t work in the water pump’s favor, either, when it comes to rust and corrosion.
  3. Whining Noises.
  4. Overheating Engine.
  5. Radiator Steam.

What are two common reasons for water pump failure?


Can you reset a water pump?

Hold the reset lever in the start position until the pressure builds up and the gauge reads over 40 PSI; then let it return to the AUTO position. The pump should now run on its own and continue until the pressure reaches the cut out setting, (usually between 50 – 60 PSI), and then shut off.

What does a dying water pump sound like?

Finally, if you hear a high-pitched whining noise that comes from the front of your vehicle’s engine, it could be a sign that the water pump is dying. The water pump uses a pulley or belt in its operation, and if this pulley is too loose, it will make a whining sound that some describe as harmonic buzzing.

What does pump cavitation sound like?

Rather than an occasional rattle, which might be caused by mineral deposits or eroded material from inside a pump system, cavitation sounds like popping bubbles or even rocks passing through the system. This can also be accompanied with a cracking noise and perhaps even a continual rumble.


    Leave a Comment