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Misc: Everything Else Pre Monoblock small drain screw

James B

Website User
VOC Member
Can anyone help identify the screw thread and size for the small drain screw on the premonobloc float chamber?

I was planning on making an adaptor to a clear pipe so I can monitor the fuel level - part of the ongoing ‘it doesn’t run right’ saga



chankly bore

Well Known and Active Website User
Non-VOC Member
If you mean the blanking screw, it is either 2 B.A. or 1/4" B.S.F. according to "Know thy Beast."