How often should you change impeller on Mercury outboard?
TomP. Mercury recommends changing the impeller every 300 hours…its in the owners manual. It’s an easy enough job to do yourself if you have some mechanical skills.
What happens when impeller goes bad?
If your impeller fails, the pump can’t pump cool water to the engine causing your engine to overheat. If you catch that your impeller is failing early on, you might avoid major problems. However, if you’re not fortunate enough to catch a bad impeller, the results can be catastrophic to your engine.
How often should a boat impeller be replaced?
How often should the impeller on a boat be replaced? It is recommended that a boat impeller be replaced every two to three years or 300 hours, whichever comes first. However, it is suggested to also visually inspect your impeller at the beginning of each season for any signs of wear or damage.
How much does it cost to replace boat impeller?
The impeller should run around $30/40 and take about 25 minutes or so. The hardest thing is getting the speedo tube back in place. Just apply greese on the bolts and impeller shaft and jog the propshaft and it should go smoothly. The last one I had put in my 50 hp Merc 4 stroke was about $125 installed.
What causes boat impeller failure?
Impeller pumps generally fail in one of two ways. This is usually caused by running the impeller pump dry. Remember, the fluid being pumped provides the cooling and lubrication for the pump. This is often caused by a water inlet seacock not being opened or a plastic bag covering the water inlet.
How do I know if I need to replace my impeller?
A boat impeller needs to be replaced if its vanes are slightly melted or have cracks in the roots, or worn off. Yet, many experts suggest yearly replacement as a general rule regardless of its condition, but you can do it whenever you see any visible loss OR do it yearly for peace of mind.
How do you know impeller is bad?
Signs of a bad boat impeller are either boat engine overheats when you try to accelerate, loss in impeller vanes flexibility, physical wear & tear like cracks in impeller vane roots, melted or worn of vanes. Even if you see less or no water coming out of tell-tale, it might be due to a bad impeller.
What causes impeller failure?
The top 3 most common causes for impeller failures are due to cavitation, erosion and corrosion. Cavitation is a great danger for any centrifugal pump is cavitation. “Commonly seen on the pump impeller, cavitation is caused by a pressure difference, either on the pump body or the impeller.
How do I know if my water pump impeller is bad?
These five signs can help you recognize that it’s time to bring your car in for inspection and possible water pump repair.
- Coolant Leaking. One of the first signs of a potentially faulty water pump is a puddle of coolant on the ground where you’ve parked your car.
- Rust or Deposit Build-Up.
How do I know if my boat impeller is bad?
Is it OK to start a boat out of water?
Starting a boat without water is not recommended. Most outboard and inboard engines use impellers (rubber pumps) to run water to the boat’s cooling system. Without water to cool off and lubricate, the impeller will heat up super fast and possibly damage.
How long should an impeller last?
You should check the impeller’s condition during Spring Commissioning and every 200 hours of operation. Correctly installed impellers may last for several years, but you should stick to a schedule of preventative instead of emergency maintenance.
Which is water pump impeller for MerCruiser engine?
Sierra 18-3017 Water Pump Impeller for Mercury Sierra replacement water pump impeller for Mercury and Mercruiser engines. This impeller fits MCM and outboard applications.
What does an impeller do on a water pump?
Functional water pumps containing impellers work to pump cooling water through your engine for further sustainability. As with anything else, the better your parts are, the better results you can expect.
Where can I buy a Mercury outboard water pump?
Choosing the right Mercury outboard water pump or Mercury outboard impeller can be a real hassle, so go ahead and reach out to one of Wholesale Marine’s dedicated customer service representatives.
Where can I get a water impeller repair kit?
OEM impeller repair kits from Mercury/Quicksilver ensure you’re getting the best for your engine and saves you time and money. Refer to your service and/or owners manual for more information.