Carter BB-1 Setting Float Level This illustration show how to set the float level on the BB-1 carburetor. The gauge that is shown is not available, but using a metal ruler to do the same measurement is as good as anything. Updated on 12/05/2020 Was this article helpful? Yes No Related Articles Carter BB-1 Description Carter BB-1 Build Sheets Carter BB-1 Troubleshooting Gray Marine BB Updraft Carburetor Carter BB-1 Accelerator Pump Stuck Carter BB-1 – Where Do the Check Balls Go Need Support?Can't find the answer you're looking for?Contact Support