hand pump
i nedd help on what to do my hand pump is leaking air from the bottom i checked everything i think its broken.
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Mine was leaking between the big brass nut and base.
I believe it is hand tight fitting, it loosened up on me and blew the o-ring.
Loosen the collar thing at bottom of pump shaft, lift up, loosen big brass nut and check o-ring is seated proper. I put a wrench on the big brass nut to tighten down, but not too much pressure, just snug.
Good Luck