Wont drain or spin out right - Whirlpool Cabrio WTW6600SBT Top Load Washer

See the causes and use the common sense. God bless you
Lid Switch
This is the most common reason for the washer not spinning or agitating. This is easy to check. You will need to remove the switch, this varies with model type but the testing will be the same. When the lid is closed the switch should have continuity when the lid is opend the switch should have no continuity. If it differs replace the Lid Switch.

Timer
To check the timer you will need to refer to the wiring diagram or disassemble to access the motor. Check the leads from the timer to the motor when turned to a wash cycle this should have 120 volts. If not replace the Timer, if it does the timer is not the problem.

Motor
To check the motor you will need to disassemble the washer to access the motor. First you can check the motor windings, to do this remove the plug and connect ohmeter to terminals. Refer to the tech sheet or service manual for the proper reading. Check motor for shorts by connecting ohmeter to terminals and motor housing should have no continuity. Connect voltmeter to motor wire connector and check for voltage. You should have 120 volts, if you do and the motor does not run replace the motor. If it does not have power the problem is elsewhere.

Belt
If your washer is a belt drive type make sure the belt is tight. Check for black soot from belt wear. Replace if it has excessive wear or broke.

Motor Coupler
This is a fairly common problem with direct drive machines but inexpensive and easy to replace. The Motor Coupler transfers power from the motor to the transmission. The following video will walk you through the replacement of the Motor Coupler.

Transmission
The transmission does not usually fail. To check this on a direct drive remove the motor and then turn tub inside. If it spins freely with no noise the problem is elsewhere. If it is noisy it needs replacing this is expensive and depending on the age of your machine you may not want to replace it. On a belt drive remove the belts and spin tub.