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Honda rancher 420 shuts off while riding fan not coming on.


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When running for a while the rancher will shut off without the fan turning on. We then took it to dealer where it was started and warmed up. The fan came on at the dealer so they then replaced the fuel filter and fuel pump. We got it back and ran good for a few days with the fan coming on when needed. Now its back to shutting off before the fan ever comes on. It seems like the time the fan should come on the bike shuts off. It will start after letting it sit for a few minutes. Any ideas of the problem? 

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My guess is a wonky  temperature sensor.  Like all electronics /  electric relays and switches , they  can go  intermittent----  work  one time and not the next, then  work  and fail again at random times. I'd replace it and see.  I'm  not  a  Honda dealer or service mechanic but I can't see their thinking in replacing the fuel  pump and filter when the  bike  runs fine until warmed up to the point the fan  should come on.  That's not a fuel starvation issue  that should show up well before the motor reaches  operating temperature.  That  points far more to a sensor/  fan circuit problem to me.

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