Originally Posted by jackytdunaway
My Universal M-12 stays around 145 and it should be up around 165 +. I think i need to change the thermostat. i have found a local tractor dealer that has the thermostat but it is rated at 180 degrees. the manual says my engine can run at 165 to 190 but i was wondering how the upper range would effect my heat exchanger and hot water heater. any thought on this? My concern is my pressure relief valve on the water heater
I have an M-12 that was running hot and overheating when I purchased it (or more accurately, right AFTER I purchased it). I have the temps running lower now after descaling the heat exchanger and pulling out four impeller vanes that the previous owner never looked for. I didn't notice any problems with the pressure relief valve on the water heater when it was running hot.