On the front you should see 2 phillp head screws, that holds that cover on the control.
Once that is off , push the regen button and hold , if the motor turns, great, if not, check wires, female and male spades make sure that the are on..
If the motor runs, look under that silver metal plate and make sure that the piston that is in that carage is moving, if not then that is the challenge..
Let me know.. I will check in later today.