My smaller johnson had a pickup tube in the housing. With your alarm you only know when it is too hot. You do not know how close you are to setting the alarm at full throttle; it can be running hotter than it should then too. I would drop the lower unit, pull the sending unit and try to force water through the sending unit hole. This should backflush the head. Backflush the impeller housing too.
431 views
Usually answered in minutes!
×