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Richard Lorenz · 12-14-2018, 11:49 AM

I Have 3 of the carburetors that use the small circular opening for the idle outlet. These 3 have large
Z" embossed on the throttle side. I just discovered that the were built to use the round B-1 style float. The rectangular float cannot be used. I also have 9 other "Z" carburetors that can use either style float and all 9 have the common brass-slit style idle opening.

This suggests that the style with the circular idle outlet might b the first B-1 type.

12-14-2018, 11:49 AM	#20
Richard Lorenz Senior Member Join Date: May 2010 Posts: 447	Re: Zenith B Carburetor Diagram I Have 3 of the carburetors that use the small circular opening for the idle outlet. These 3 have large Z" embossed on the throttle side. I just discovered that the were built to use the round B-1 style float. The rectangular float cannot be used. I also have 9 other "Z" carburetors that can use either style float and all 9 have the common brass-slit style idle opening. This suggests that the style with the circular idle outlet might b the first B-1 type.