Re: Picture of running a dry impeller

[DAN ANDERSON]

It is the friction of the impeller turning inside a dry housing. Just a small amount of water (fuel, oil, something) lubricates and gives a little more time. OMC always told us 7 seconds was all it took to start damage to the housing. Now I am talking about plastic housings. Once they warp it’s the beginning of the end. The impeller can be compromised also. If you think about the damage is comulative then it doesn’t take much to do harm to your pump. No excuse to start out of the water. At least wet the pump before popping the motor off!
Cast aluminum housing are more forgiving, but damage to the impeller is the same.

Dan in TN