does a I/O have a thermostat

[roffey]

OK so I finally got some time. I took the lower unit or out drive off the boat and replaced the water pump or impeller. What I did was to start the boat with the thermostat housing removed. I could see no real water movement so I was confident the impeller was the problem. Just as you people said it not that bad. Here is a pic of the old impeller, not sue if I needed to replace or not.

I think it was a couple of years past due, LOL