Exactly what Jerry says about running in a test tank. When pushing a boat at full throttle and making 25 horse power, it’s also going to generate a lot of heat. A lot more heat than when it’s lightly loaded. Probably nothing to worry about if the restrictor is intact. I don’t think any of my non thermostat motors get over 100 F while running in a drum.
My old ’77 25 is coming back for servicing sometime so I’ll check it when it’s here.
