Topic: Need petcock info '73 cb500. Fuel still flows in all positions w/new parts

[RatBikeRandy]

 
Petcock still flows after installing rebuild kit.  Also, how exactly does the reserve work on this petcock.  It's a little different from the smaller bikes that I have worked on.  I don't see where the fuel gets into the petcock after the level drops below the main tube.

Thanks.

[bryanj]

There should be a hard fibre washer under the head of the screws that hold the petcock on. without those gas leaks down the threads and through the petcock even in the off position