How often should you change Mercruiser impeller?
How often should you change Mercruiser impeller?
Keep your sterndrive running cool by servicing its water pump impeller. Most engine makers recommend changing impellers every two years — sooner if operated in sandy or silty water.
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 do you know if your boat 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.
How can you tell the difference between Gen 1 and Gen 2 Alpha?
The Alpha Gen II upper and lower housings are fastened together with two through bolts on either side of the drive along with the front and rear bolts, while the Gen 1 drives use one stud visible on either side. Alpha Ones have two studs under the ventilation plate just above the prop.
What causes boat impeller failure?
Impeller pumps generally fail in one of two ways. This is usually due to impeller or housing wear or impeller age. The second failure mode is sudden, catastrophic failure, with the impeller usually loosing some or all of its blades. This is usually caused by running the impeller pump dry.
How long does Mercruiser impeller last?
Generally speaking a 5 year interval likely works well for most folks. 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 an impeller fails?
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.
Is it easy to change an impeller?
Changing an impeller is not a daunting task and it’s one that every boater should consider adding to their arsenal of DIY maintenance. Changing an impeller, on many engines, usually takes less than 20 minutes even if you are fairly slow. The most complicated aspect of the task is physical access to the pump.
