The 6 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 # 278249
If the washer won't spin 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.
RepairClinic Item # 3481
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 # 1223
If the washer won't spin, the clutch assembly might be worn out. The clutch assembly makes the connection between the transmission and the inner tub. It is designed to allow the tub to get up to the proper spin speed gradually. As the clutch wears out it may prevent the tub from spinning. The clutch is not repairable, if it is loud or not working properly it will need to be replaced.
RepairClinic Item # 963750
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 # 1394382
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.
RepairClinic Item # 279566
If the washer won't spin the transmission might be worn out or defective. There are numerous more likely causes when a washer won't spin, which should be checked first.