The over heating light is on the 30 hp 2stroke YAMAHA boat motor?

Question

How do you fix . The piddler seems to be working and the water is coming out, what eles could it be

Answer 1

Change the thermostat and the water pump. Regular maintenence requires you replace that junk all the time and it's cheap.

Answer 2

the light means you are low of 2 stroke oil.the rev limiter should also keep you from running wfo.atleast the one i owned worked this way.by the way the oil reservor is under the hood.

Answer 3

I would agree with above. particularly the water pump, they are made to be easily changed

but . . ..... if you have water coming out the piddler hole, that is a baffler.

how warm is water coming out? you should be able to hold your hand in the stream, it is not called a pee hole for nothing.

If it is boiling hot (be careful) then perhpas you are not getting enough water through. Check the intake grate of the water system, it that is clear it might be that the pump is working but not moving enough water to meet the needs of the engine.

You can use compressed air and back blow the system from the piddler hole, if things are plugged wiht a bit of moss or seaweed this may dislodge it.

If the water coming out of the discharge hole is warm but not hot, it may be somehtign as simple as the sensor unit giving the warning light a false indication.

good Luck with it.