Thermostat Replacement for S225TXRV - 1997 225HP

[Boatman2]

Does anyone have a diagram or pictures of where the cap for the thermostat is located and steps on how to change it?

After 3 miles of running my alarm went off and the RPM's reduced so I turned it off and back on again and it was peeing and there was oil. I tried to get it on a plane again but the alarm went off again so I took off the cowling and let it cool down a bit and then idled it 1 mile to the dock. This made me think it was the thermostat that was stuck.

Any suggestions would be very helpful and let me know if I should change any other parts while I am at it.

[Sequoiha]

if it idles fine without overheat, then it probably is not the thermostats.. it is more likely the pressure control valve is stuck closed. this is a very easy repair. i would certainly check the thermostats, they are on each head near the top,,