Hi HPOCA,
  I have a 1946 RC70 gas tractor.  I had a problem where I forgot to shut off the petcock on the sediment bowl to shut off the gas supply and the entire contents of the gas tank emptied into the crankcase.
  After I drained the gas/oil mixture, I put on a new oil filter and refilled the crankcase.  I cleaned out the sediment bowl, installed a new gasket for the sediment bowl and I took off the Zenith carb to make sure it wasn't dirty or gummed-up.  The carb was very clean and I reinstalled it without taking it apart.
  When I refilled the gas tank and turned on the petcock on the sediment bowl to start gas flowing to the carb again...I still get gas coming out of the air intake on the carb.  What am I doing wrong?  Is the carb's float stuck open and letting gas spill into the 'air shaft' of the carb?  Any help/tips/tricks would be greatly appreciated.  Thanks in advance.

OliverEducation