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Hank F.
Hank F., Technician
Category: Small Engine
Satisfied Customers: 14747
Experience:  Certified on Onan and Generac generators
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Kohler 53 runs about 4 seconds and dies and flashes uf. prior

Customer Question

kohler 53 runs about 4 seconds and dies and flashes uf. prior to starting it displays 137.6 and you can scroll through anything with the arrows on the generator display
Submitted: 1 year ago.
Category: Small Engine
Expert:  Hank F. replied 1 year ago.
My name is ***** ***** I am going to assist you with this.
53 is not a model - I am not sure what you are seeing there.
The 137.6 that you are seeing is the total run hours on your unit.
Code UF is Under Frequency. It usually means that the engine is running too slow. This is most often caused by a fuel delivery problem.
But on your unit, the UF code can also be triggered if the controller is not configured properly.
Customer: replied 1 year ago.
The engine is not running any different than it has in the past and this is the first time there has been any issues. And the model is 5e it runs 4 seconds every time and then shuts off
Customer: replied 1 year ago.
And flashed the uf code
Expert:  Hank F. replied 1 year ago.
Connect a frequency meter to the output leads of the genset, and measurwe the frequency while holding the start button to keep the engine running for a couple of seconds.
What frequency do you get?

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