65' 9.5hp how hot is to hot?

[Carbkid]

I installed a new water pump kit and lower unit seal kit on my motor and I was wondering if I need to replace the thermostat as well. It just seems that the motor is running hot to the touch but I have not had a problem while running it. Is this normal for this engine? Thanks

 

[Texasmark]

Re: 65' 9.5hp how hot is to hot?

Don't know particulars on your engine but I know that some engines run 120 to 143F stats. With that the water could reach 5-10 degrees above that.

The Normal setting on most USA domestic household hot water heaters is 140 F if that gives you any idea.

My experiences: Just because you change the stat the new one won't fail....wrong.

Just because you don't change the stat it will fail.....not necessarily.

Mark

 

[ezeke]

Re: 65' 9.5hp how hot is to hot?

It is a 143 degree thermostat so the head is warm enough, for sure. But you should be able to keep your fingers on it for a count of three. If the pump is running well, you will have a constant spitting of water out of the exhaust relief at the back of the lower engine cover. That flow will vary in temperature as the thermostat cuts in and out.

 

[Carbkid]

Re: 65' 9.5hp how hot is to hot?

Ok good, I am able to hold my hand on the head without getting to hot. I would guess it to be about what you state at 140 deg. Thanks fella's