Or, just apply slight pressure with your fingers on the knurled nut (may have a dot of paint on it as a seal), in either direction to determine if the micro switch is functional. The dot of paint or glue should break fairly easily if you do have to actually turn the nut either way. I believe it...
Not true! Unless dictated by your skill set. If you’re going to replace it, may as well mess with the adjustment wheel first. Worst case, you replace it.
41’ boat
One seawater pick-up
One strainer
One pump
Two hoses
Two AC units with individual thermostats
When either thermostat calls for cool, pump is turned on and water flows equally thru both AC units.
Nauti-Kal, it appears my for sale posting has been hi-jacked. Talk to me if still interested. You can’t be so far that we couldn’t meet somewhere. I just want to get it to someone who can use it, not store it forever.