Join Date: Sep 2007
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If you elect to replace the Joker valve instead of replacing the entire unit, here's a suggestion from experience:
Don't go cheap and replace only the Joker valve! Since you've got the unit mostly disassembled anyway, now's the time to do a complete overhaul and replace ALL of the seals, gaskets, o-rings, and the like. If you do it all at once, you can feel confident that your headaches with the head have been pushed well down the road; if not, you may find yourself tearing the unit apart soon to replace a different seal or valve.