I have an Sea Ray 180 BR with a 135 MerCruiser and it is running hot.
While it looks like it flushes ok, it think it may be a restriction in
the water flow. It was kept in the water and had a large amount of
growths on the stern drive (now kept in dry storage). I got it all
cleared up and repainted but there may still be some clogging in the
water intake. How can I get in there and clean it out? It doesn't
have removable vents so I assume I have to take apart part of the
lower drive. If so, do I need to remove the prop to do so? Also,
water only comes out of one exause when flusing the engine. I can't
remember if that is correct or not, but it does flow pretty good when
flushing it.

I am a learner when it comes to boat maintenance, so your assistance
would be appreciated. Any tips would be appreciated as well.

Mike