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Shallow Water Jet pump will not start

I have a Mastercraft 1/2 hp shallow well pump that will not start. The cord is fine,I put a tester on the cord and Im getting power when touching the pressure switch contacts, the pump has never been used so its clean, not sure what to try next.I have hooked it al up,primed but nothing at all. Any ideas ?

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On the pressure switch are the points closed if not its not asking for water.that flat plat under the two screws with springs on them,push down on the plate that will close the points then figure out why its not closing

Posted on May 17, 2010

Testimonial: "That was exactly the problem, the pressure switch had to be replaced and it now works fine"

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A shallow well pump needs to be primed. On the bottom of the well above the sandpoint there should be a foot valve (check valve) installed.

On the top of the pump there is a fill cap. Fill the pump until it is filled to the top. I

Replace the fill cap and start the pump. If there is air remaining in the well attempt a second time.

If the pump can not be filled it would indicate that the check valve is not working\ or the water level in the well is low.


cannot-get-new-pump-prime-old-pump-edcyhy51ohkznhh1wg1ly0d0-3-2.jpg Hope this helps?

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Can the pressure switch on the Utilitech 1hp convertible shallow well pump be changed from 20/40 to 30/50?

Yes, if the plumbing can handle the extra pressure. There should be a nut in the middle of a large spring inside the pressure switch. Turn that nut clockwise to increase the pressure. You may need to run some water to keep the pump cycling while you do this.

Jul 24, 2014 | Utilitech 1-HP Cast Iron Shallow Well Jet...

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Runs but will not pump water from a sand point.

You have a air lock. shut pump down refill with water and start, may have to do this a few times.

Sep 18, 2013 | Sta Rite Industries Shallow Well Jet...

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Shallow water pump keeps stopping

new pump --not big enough for the job
old pump --motor windings problem, faulty start run capacitor
I suspect that as the motor is 1/2 hp if will run good when there is a need for water but under pressure the pressure switch is set to high so the motor overloads and gets hot

Mar 24, 2017 | RTO Wayne 1/2 Hp Shallow Well Jet Pump

1 Answer

Prime the pump

see the FIRST in red under the STA-RITEremove the lid fill the pump up with about 3 gallons of water then replace the lid and start the pump. should start to flow in about 1 minute, if not repeat priming procedure


Jul 19, 2012 | Sta Rite Industries Shallow Well Jet...

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1/3 hp shallow well jet pump (mastercraft brand). After power outage i have been having problems with pump. It will run continuously without building up enough pressure to cut out. It wil build up to about...

I don't think the power shortage had anything to do with the pump, I think it is the impeller or a gasket, or both. It is hard to say, a pump like that should **** dry and pull water right in.If you put your hand over the end of the pipe, it should make a mark like an octopus on your hand. I would take off the impeller, look for trouble, and replace 3 or 4 parts in there , you should have water. Hope this helps.

Sep 24, 2010 | Plumbing

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Pump stopped working while pumping

Yes, most motors are thermally protected. It is usually bi-metallic, and resets itself.

Aug 08, 2009 | Flotec Corrosion Resistant Shallow Well...

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I have a flotec jet pump for a shallow well. It keeps throwing the GFI and shutting off after only 10-15 seconds. I have replaced receptacle, water level is fine (has a float).

If this is a new problem that has just started
The GFI mite be bad or the motor mite be going bad Need to check the amp draw of the motor this will tell you witch is the problem

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