overheating johnson

[josip77]

hi
i have 2000 year,130hp johnson,have problem with overheating,but engine is cold,im intrsted what resistance must have temperature senzor on cilinder head on 20,and 60 degrise??

 

[josip77]

Re: overheating johnson

hi
i see this is termo switch,one have one wire(brown) and when i heatting him,resistance comes zero,but second have two wire,brown and white-black,white-black is always on ground,zero resistance,how work this termo switch?
bestregards

 

[Marc III]

Re: overheating johnson

I don't have any motors that new. But I believe it is a bi-metal switch. Open when cold, closed at 200 degrees (edit) or so. It provides a ground when hot and closes the circuit. If it's stuck closed resistance will be near 0 ohms.

 

[ezeke]

Re: overheating johnson

The tan wires are for the warning horn. The temperature switches close the horn circuit when the engine overheats at around 210? F.​

The black and white wire controls the powerpack features of QuikStart 96? and S.L.O.W.​