how to remove rear windshield wiper motor? on 2008 Kia Sportage

My rear windshield wiper slowed down a few days ago and has now completely stopped moving (the blade is stuck in the middle of my windshield), I can hear the motor still running (even with wipers switched off)and would like to remove the unit and check to see what may be wrong... any advice on how this can be removed?

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1 answer
There is a nut at the bottom of the wiper arm tighten it up AFTER making sure the rear wiper and wiper motor are in the parked (off) position!!