It's real easy ,take the switch & wires off, then unfasten treadle rod off motor arm, on the motor there's 2 bolts side by side.Just loosen these 2 nuts 2turns,then on the other side take the nut all the way off the bolt.Push the bolt out of the table & now you can slide the motor off.and slide the new back on put the bolt back in tighten them,fasten switch & wires & adjust belt tension.