JABSCO TOILET ASSEMBLY

Dan Alsop

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Help! I am fitting a service kit to a two year old but unreliable twist and lock version. The old joker valve has distorted so that the 3 vents remain permanently open, hopefully explaining why the discharge pumping has been so poor. However my question is - which way up does the "base valve gasket" go? (Part 16 on the diagrams) I can't tell from the diagram and did not note this when dismantling.
Dan Alsop
 

VicS

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