Posted 21 June 2013 - 11:26 AM
Looking into your unit it is to the right,, correct a horizontal slot. It's more like a 5/16", 3/8" or 7/16". But looking at this image it would be where the Blue arrow points to the right towards the impeller. I usually don't free them up anymore, I just use the impeller pump repair kit. If you free it up, you most likely are damaging the seals at the same time. The kit comes with replacement seals.
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