Author Topic: CB750 K2 Petcock Screw Size?  (Read 637 times)

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Offline Lucien Harpress

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CB750 K2 Petcock Screw Size?
« on: October 29, 2017, 05:26:57 PM »
I'm currently in the process of de-rusting the tank on my K2 750, and to plug up the tank I need to know the thread size on the screws that hold on the petcock.  This is the bike with the two-screw petcock on the right side.  Parts fiches tell me it's a M6, but does anyone know the pitch?  1 or 1.25?

I've got M6x1.0 right now, and they thread in a bit, but seem to bottom out.  HOWEVER, my tank is in pretty rough shape, with lots of gunk on the threads.  I could clean it out, but I don't want to re-tap it to the wrong pitch.

Anyone with any insights? 
-1970 CB750 K0
-1980 KZ1300
-1976 Yellow GL1000
-1965 CA77 "Dream"
-1997 Valkyrie
-1975 Velosolex