One last little idea. You would be wise to look closely at the fan belt while you have the machine disassembled. I recently replaced the belt on my 1973 Ford 2000 3 cylinder gas tractor. It wasn't possible to get the belt out between the fan blade and the shroud. I had to remove the hood, front nose cover, front bumper, and radiator to replace the belt. Way too much time and effort for such a simple task.
YMMV, but that's what I had to do on mine.
Tom in TN