on some pumps something small like a hair pin can jam it. some pumps can be easily un screwed to clean out'you might have to remove a hose or take pump out to do.i repaired mine this way 'good luck B.J.H.
B J Heller
July 2006
I can answer this question...
Where (how) can I repair the pump which is not running any more. I live in?
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