jlearning1 Posted July 8, 2011 Share Posted July 8, 2011 Hello Everyone I have a 1980 Yamaha xs400. I have rebuild the fuel petcock and it has very bad leak. The diaphragm has 2 gaskets onit and I dont have a gasket for the bottom half(theres where I think it is leaking from). Do I suppse to take one of those gaskets off the diaphragm and use it on the bottom half of the petcock? Link to comment Share on other sites More sharing options...
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