Just got my new manual, how about that guys, I listened, but can't find section that talks about a thermostat. I assume there is one in there someplace but just haven't found it yet. When changing the water pump out is it a good idea to check the thermostat(s). Where are they (it)located?<br /><br />Also have a question about a lead that comes out of the top left corner of the head. Is this the temperature switch assembly and how would you test it? Looks like the head would have to be removed to remove it. When my impellar/pump quit supplying enough water to keep the engine happy I luckily heard the hot engine horn blowing in the control box but it was so faint I didn't realize what it was at first. The horn probably needs to be replaced but first wanted to make sure all the connections were in good order and the temp switch would be in line with the horn.<br /><br />Another question. The rubber exhaust boot (that's what I call it) that seals the exhaust where it enters the lower unit seems to be in bad condition. Haven't been able to find the part, may be that I'm not calling it the right thing, on the internet. Anyone know the proper nomenclature and where I can find a replacement?