Kenmore 80 series model # 100.26832690 Washer fills fine but will not agitate, spin, or empty. The motor is humming so I assumed it is not the cover switch. Also, burning smell is coming from somewhere around the motor/bottom area. I have read many of the posts and based on information, I assumed it was likely the coupler. I have the motor out and the coupler out but the coupler looks fine, no breaks, cracks, and when the copler pieces are on their shafts, they are tight and the shafts can be turned. Is there any possibility it could still be the coupler? What else are likely possibilities? Thanks in Advance

Hi- thanks for reading this. I have a GE 900 Potscrubber dishwasher, and no water is coming out of the upper sprayer arm. I pulled off arm, and checked for blockage - even used vacuum to suck up some water to ensure that there wasn't any blockage. Am wondering if perhaps the pump isn't producing enough pressure to elevate water to come out of upper (top) spray arm.....any way of checking that????? dave