I have ordered an operator's manual. This tractor was repainted and the serial number plate was painted over. The numbers on the block has '55 on it and this tractor  has a long pto handLe so I am assuming that it is a '56? I did take the top plate off and I found that the left shifter rod was broke in half. Also the hydraulic oil is low and really watery. I am going to open all three drain plugs and inspect the oil.

As for the carburetor issue, it is the linkage that runs to the governor. 
Thanks