Help with Johnson 60hp thermostat replacement

[jilett]

I just inherited an '84 Johnson 60hp outboard from my grandfather (2stroke/2cylinder). It runs well but over heat alarm comes on after 10min. I thought to start with the basics and change the thermostat and impeller but I can't seem to find the thermostat. Can some one please help me located it. Thanks

 

[trendsetter]

The thermostat is in the cylinder head just below the bottom cylinder spark plug hole.

Go to shop2.evinrude.com and choose your model to view the diagram.

 

[NautiGirl]

small hatch on rear of head- two bolts. buy the replacement kit with spring and gasket. try replacing the temp sensor first. its is cheaper and more likely to fail first. easy pry out with a screwdriver and plug in new rubber cork with pigtail wire.

 

[jilett]

Thanks for the info. If it's not the thermostat I'm going to try to tackel the impeller. Where is the temp sensor located. You think I should replace that before trying impeller?

 

[trendsetter]

Thanks for the info. If it's not the thermostat I'm going to try to tackel the impeller.

Tackle the impeller first. That should be replaced every 2 seasons. It's a cheap rubber part that holds your motor's life in it's hands.

 

[NautiGirl]

1) impellor first- located in lower leg
2) temp sensor- back of cylinder head-little rubber circle with a wire hanging out, sitting in a hole
3) thermostat- back of cylinder head
with that old an engine, get yourself a repair manual and do any maintenance that needs doing

 

[wildwest]

If you had the specs. of the temp. sender ...you could put an ohmmeter on it and check cold and warmed up for an easy start of diagnosis