[Farmall] Super C Problem

[Jeff & Ginny Pomije]

I have a Super C that I have been having a problem with for a couple 
years now.  It used to happen every great now and then, but now is 
becoming more frequent.  I'll start the tractor and go to work cutting 
hay, etc. and it runs fine.  After a while it starts to sputter.  I used 
to be able to rev up the engine and it would quit for a while.  More 
recently revving the engine does not help.  I have to choke the engine 
about half way out to get it to quit.  After awhile I may or may not be 
able to push the choke back in.  Lately choking is having less and less 
affect.

I have had the tractor looked at by two different mechanics over the 
past couple years.  They cannot find anything wrong...the problem never 
happens when they are looking it over.  If I remove the fuel line from 
the carburetor, fuel runs out of the line.  So, no fuel problem at that 
point.  The carburetor has been gone over.  I'm not much of a mechanic, 
but I am looking for things to try.

Thanks,

Jeff Pomije