The tractor came already converted to one 12 volt battery, so in the interest of trying to get it going, I left it as it was. Once I have it running and begin work on restoring it, I will rewire the cables and convert it back to original.
I have pulled the rubber hose from the intake manifold and checked it for obstructions, and it appears clear. (There was a large, abandoned wasp nest in the exhaust pipe!).
I appreciate the thought on the fuel filters. It could be that the flow is restricted and I am not getting enough fuel to fire it up. I will replace those and see if it helps.