Model #390250281 CRAFTSMAN Pump

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Question and Answers

Q:

New pressure switch? 390250281 Craftsman Shallow well jet pump

A:

Thank you for choosing sears I would be happy to help you with your jet pump. Upon researching model390250281; at this time we have not found a substitution or replacement part compatible for this model.

I trust that this information will help you, thank you have a great day.

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CarlosZ -
Sears Technician
January 07, 2015
Q:

Need help troubleshooting my shallow well pump 390.250280, does not maintain pressure or enough volume.

A:

The Managemylife web site is a good resource of information to find out what may be happening and what options are available to you. I'm sorry to hear about the difficulties with your well pump. I did some research at Managemylife website and found this expert answer to a similar question that may help until your expert can respond. I have attached the link below so you can check it out. I also found a manual that may also be of some use to you. The links are attached below.

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James -
June 08, 2012
A:

James, thanks for the response, however, that was actually a question that I asked previously. I was trying to find a manual at that time. Now my issue is that the manuals TS is so broad. I have also tried searching online for the black water line to try getting a length without having to splice, but I cannot find it anywhere with an I.D. of over 1 inch. The place that sells it here only sells it by the roll, 250 feet.

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Bill -
June 08, 2012
A:

Thank you for your question on the well pump not holding its prime.

If this is a deep well pump it may be that the check valve is not holding the water in the pipe.

If it will pump water for awhile and then looses its prime it could be that you water table is to low and you are running out of water volume in the well. You may want to sound you well to check how much water you have in it.

You could try metering the water flow out of the pump with a valve to reduce the output to see if that will help.

This is also a pretty old pump and diffuser and wear ring and the impeller may be worn and is not holding volume.

If you have not replaced the impeller and the diffuser then I would at least do that if the pump has not been serviced for all these years

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Fred M -
Sears Technician
June 10, 2012
A:

I was wondering about the impeller. We checked the water table, it is at 15 feet. the foot valve is down at 25 feet and is brand new. All of my neighbors use shallow well jet pumps also and have no issues. I also plan to replace the poly-pipe as the 1-1/4" ID pipe has had to have a splice in 2 places one due to a kink when I first removed it. I live right by a river, literally less than 500 feet away plus live on a small part of the Ogalallah Aquifer. I will try replacing those parts too as I have found it is easy to disassemble.

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Bill -
June 10, 2012
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