The 4 most common part(s) or condition(s) which cause the symptom Washer won't spin are listed below starting with the most likely. Check or test each item and watch any available videos.
RepairClinic Item # 1156860
If the washer won't spin, check the drive belt. If the belt is broken or if it isn't tight on the pulleys the washer won't spin properly.
RepairClinic Item # 823044
If the washer won't spin then the drive pulley might be worn out, seized, or damaged. Remove the drive pulley and inspect it carefully. If it is damaged or defective replace it.
RepairClinic Item # 1154705
If the washer won't spin 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 It will have to be replaced.
RepairClinic Item # 508644
If the washer won't spin the tub bearing might need to be replace. This is a very involved repair and will require disassembling most of the washer. The manufacturer recommends that if possible the complete outer tub and bearing be replaced rather than attempting to replace just the bearing in the tub. If the bearing is bad the problem is going to get worse very quickly and so either the drum and bearing will need to be replaced or the washing machine.