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Message: <blockquote data-quote="Hotrod1830" data-source="post: 97915" data-attributes="member: 4331">Forgot the kubota's used a smaller temp sender. Unlikely you will find one with an adapter that small.If you dont have coolant circulating, it WILL get hot enough to boil over and you will hear coolant boiling in the block. If you havent heard that or had coolant errupt( violent boil over) from the cap when you removed it, there is still a chance it is not actually overheating. It may be hard to tell if coolant is circulating by removing the cap.Is the radiator hot all the way across it? Is there hot air coming from it via cooling fan?I am saying this because you are measuring temp with the IR gun at the thermostat housing and getting 180. If it where actually overheating, I would expect to see a reading well over 200.Maybe someone here has a repair manual and can give a ohm reading on the coolant temp sender at 70 deg and 212deg.</blockquote>