The pump on my Kohler whirlpool keeps tripping the GFI, why?

sorry that a bit confusing u said it trip the gfi then u said it does not trip the gfi?

You didn't specify how your pool is set up, but the GFI tripping means you have too much power, too many devices plugged into it. I think you need an electrician, just to be safe.

It could be a faulty pump,
rusty pump & moisture on copper windings leaks active, neutral back to earth on your pump & trips your breaker.
Solution: Replace pump.

If it is tripping the GFI I would say you have created a short somewhere. Check that wire has not been braised, check the plug for signs of burning, check outlet for signs of burning. Plug another device into the outlet to see if something else trips the GFI. If something else trips it then you could have a bad GFI outlet. These are the basics to try first but could be a number of things beyond this.

Did you try an electric motor rebuilder? $500 seems too high to repair a motor. Motors have either a capacitor or dual windings to get them started and it sounds like yours has failed. Get the numbers off the MOTOR and call a motor rebuilder in your area for pricing.
Gary

The GFI is sensing a fault, and tripping to protect you. If there is another GFI in the circuit somewhere then you could use that normal receptacle. I mean if there is a GFI in the main panel.

Please Vote !!

Unplug tub from GFI, does GFI hold, plug something else into GFI to see if it holds under load. If all is ok then make sure you have a good ground from the motor to the GFI and the polarity is good. If 120 vac black wire to gold post, white wire to silver post and ground to green. Check proper connections, including polarity and ground at tub junction box and at pump motor it self.

check switch and for power and properly working also check motor for proper wiring and power

no you need to put 60amp breaker in house panel box

try running an extension cord to the old outlet and see if the fridge works then you'll know if it's the fridge or outlet. good luck