f 150 water pump

Harbor Freight trash pump problems

Original Problem

Bought it 3 weeks ago--worked good--got where it was slow to establish water flow ---now won't pump at all--pumping clean pond water--no mud , rocks etc. Primed it every time according to directions. Frustrating situation--- and yes I know it is a HF product but I thought it would last longer than about 15 runs. Engine (212 Predator) runs great----called "customer service" lots of hoops to jump through.

Possible Cause

Most likely the ceramic seal behind the impeller is damaged. This usually happens if the pump is ran (at all) without water. The flat faced seal needs water to lubricate itself. If the ceramic gets hot, it burns up the rubber that seals ceramic to the shaft and housing. Happens where I work all the time. While you are there, check distance from impeller to volute. Needs to be less than 1/16 inch.

Impeller Removal

I can't remove the impeller. the nut holding it on won't loosen with impact wrenches. any suggestions?

Possible Solutions

Might be left hand thread. Nut loosened the way the impeller turns. I would check the drive key and the bolt.

Warranty

Aren't they usually pretty good on warranties? Bring back to store.

Minibike Project

He wants to use motor on a minibike. Warranty will just get him a new pump to take apart to make into minibike.