My washer spins, but will not agitate. I bought and installed the correct belts.
This issue would most likely caused by a faulty transmission. With the motor turning one way for spin it will turn the other for the agitate.
How can I determine if the motor is one or two speed?
If you look at the tag that would be on your motor it would tell you if it is a single speed or a 2 speed. Also if the unit has a gentle or delicate cycle then it would be 2 speed.