Washer drive belt. If this belt is broken, the washer will not spin or agitate.
Water inlet valve. The water inlet valve opens to allow hot, cold or warm water to enter the washing machine. If the water inlet valve is defective, the washer may fill slowly or not fill at all.
Washing machine drain pump assembly. The drain pump pushes water through the drain hose during the drain cycle. If the drain pump is clogged, damaged, or defective, the washer won't drain properly.
Upper spin bearing
Transmission drive pulley wheel