Question about Shurflo On Demand Diaphragm Pump 28 Gpm 12 Volt 12in Model 12021000

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100 psi on demand shur flo pump 8000-712-288 will run one minute but after turning it off it will not run, I tapped the side with a wrench and it ran, what could be the problem?

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Something inside is loose, like wiring or a part is lose in there and is shorting out on something or moving just enough for a contact point not to make contact, then when you smack it with your wrench you cause it move back to where it should be and it makes contact which allows it to run again. Take it to a small engine shop and have them repair it and let them know you have an idea what is wrong so they will charge you properly and not burn you, IF THEY HAPPEN TO BE THE KIND OF SHOP THAT WOULD DO THAT.

Posted on Jul 16, 2010

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