I acquired a 4710 earlier this year from an estate. The tractor has been setting for a few years and I have no history on it. The hour meter doesn't work either. It has a starting issue that I cannot figure out. I have run several gallons of fresh fuel and treatment in it thinking it might be the issue and also put a new fuel filter on it. It simply will not start without a quick whiff of ether. With a very small amount of ether, it starts right up and runs good, has good power and does not smoke. It doesn't have any noticeable blow-by either and doesn't use any oil. Also, the intake heater does work. I did some research and found the 4200, 4400, etc series tractors have a thermistor that can fail and cause this issue but I can't see where my tractor has this. I haven't been able to find much information on my series tractor. Any help would be greatly appreciated.