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Old 09-20-2015, 08:03 PM   #1
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Generac HP50G generator

Our RV has a HP50G Generac generator.
It starts up fine, but dies as soon as you release the start button.
It runs fine if you hold the start button down.

We have changed the oil and filter and the low oil pressure switch.
We have unplugged the oil temperature switch.
There does not appear to be any shorts in any wiring on the low oil pressure or temperature system.
We ran a 12 volt wire directly to the fuel pump.
Nothing has worked.

We are considering installing a wire with switch that would short circuit the starting switch, so it would be like holding the start button down.
Will this burn up anything like the starter or solenoid?

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Old 09-20-2015, 10:35 PM   #2
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Join Date: Jul 2014
Posts: 5,497
If there is actually something wrong, that's one way of finding it.

If you bypass the shut down and it needs to, you destroy the generator.

Find a troubleshooting guide and go thru the steps to fix it.

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Old 09-21-2015, 07:37 AM   #3
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Location: Cedar Park, Tx.
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Most likely in the oil pressure or coolant temp circuit - most generators have a high temp/low oil pressure shutdown which is bypassed when starting. Trace the sensor wires and look for a relay..if you can find a wiring diagram for the generator it will help. Holding down the start button will kill the starter...
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