The 75 *C thermostat in the Jinma seems to be bad. Removed and ran tractor and temperature is back to normal. Is this a special order item or can this be replaced at the local auto parts store? Thanks!
The 75°C (167°F) t'stat is pretty cold. Most folks upgrade to the 180°F t'stat (to gain thermal effeciency) thats available through NAPA and other auto parts stores. Don't remember the p/n offhand but you can match it up easily if you take it in. My TY395 engine runs very well between 185°F and 190°F.
You stand a good chance of overheating by removing the t'stat because the coolant doesn't spend enough time in the radiator to cool. This is a harmful situation.
You can also get the OEM t'stats through any one of this sites supporting dealers.