Not Ranked
I just redid mine on ERA154, and I agree with Patrick, drain the coolant, disconnect the wires from the switch, and take the hoses off at the water pump and the radiator. Pull the whole thing out to the front. Mark the hoses, then take the section of pipe that has the bung out, put it in a vice to hold it, then take the switch out.. my switch was VERY stuck from having been in there for a long time. If you try and take the switch out without removing, chances are you will just flex the hoses, and bust your knuckles.
Good luck!
Jim
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