The lid switch is the most common reason a Whirlpool washer does not spin, according to Appliance-Repair-It.com. In Whirlpool front-loading machines, this is the door switch. When this switch is the problem, the motor does not run in the spin cycle, so the machine is quiet.
The lid switch is behind the control panel on the top-loading machine. Once the screws holding the panel in place are out, it flips up to reveal the switch. With the lid closed and the machine and switch unplugged, an ohmmeter should show continuity between the two outside wires, or the switch is bad and requires replacement.
If the machine spins, but the clothes are still wet, Whirlpool says to check for kinks or blockage in the drain hose. Hoses should form a gentle inverted U shape before entering the drain pipe or sink.
In order for the machine to operate properly, the maximum drain pipe height is 96 inches above floor level and the minimum height is 39 inches. Exceeding the maximum height does not allow the pump to remove water from the machine and leaves clothing wet after the spin cycle.
Using too much detergent leads to wet clothes after the spin cycle completes. The additional detergent creates suds that prevent the pump from removing moisture during the cycle. In areas with soft water, reducing detergent amount prevents this problem.