My Kenmore washer won't spin, agitator is locked up, motor hums..

Humming is the classic symptom of a Start/Run Capacitor that has failed. It gives the motor a jolt to get it going.

Just a little puzzled why spin works though :>/

..

What is the model number?

see this causes and fix it. God bless you
Motor Coupling If the washer won't spin or agitate the motor coupling might have failed. The motor coupling connects the motor to the washer transmission. It is designed to fail if the washer is overloaded in order to protect both the motor and
Drive Belt If the washer won't spin or agitate, check the drive belt. If the belt is broken or if it isn't tight on the pulleys the washer won't spin or agitate properly.

Drive Motor If the washer won't spin or agitate the drive motor might be defective. This is not common. Check all of the other related parts to this symptom before replacing the motor. If the motor is visibly burned out or physically damaged, replace it.

Stator Assembly If the washer won't spin or agitate the stator assembly might be burned out. The stator is essentially one half of a motor, it interacts with the tub by creating a strong electro-magnet. If the stator burns out the washer won't spin or agitate. Check the stator for continuity. This part is often misdiagnosed.

Door or Lid Latch Assembly If the washer won't spin or agitate the lid switch assembly might be defective. This is a very common problem. The lid switch assembly can fail either mechanically or electrically. Test any electrical switches with an Ohm meter for continuity. The switches should have continuity according to their design.

Door Lock Motor and Switch Assembly If the washer won't spin or agitate the door lock assembly should be checked. The door lock can fail either mechanically or electrically. Test any switches on the door lock with an Ohm meter. The switches should have continuity according to their design.

Motor Control Board If the washer won't spin or agitate the motor control board might be defective. The motor control board provides power to the motor as well as direction and force. If the motor control board is defective the washer may not work at all or function properly.

Bad/broken coupler/ http://www.davesrepair.com/DIYhelp/DIY285753.htm

bad lid switch or bad motor coupler or both-mike

The timer is failed.

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hi, Does the water drain out in the spin cycle? Sounds like the coupler might be bad. Is this a top load machine? Asking questions so I can be clear and give you better info on your question.
Please let me know.

Thanks
Vic

if the motor runs than it is just a belt,not a big deal to install
be carefull because the new ones are direct gear connect and it is a bit harder to place the warn off plastic gears

If it has a mechanical timer switch, (the main control knob) that is possibly the culprit. The timer switch is basically the "brain" of this type of washer. I had this problem on a washer.

The transmission might have locked up causing the motor to overheat.