Converting to a hand crank is very easy. Check to see if the machine has a motor mount. If so, unbolt the motor. Bolt on the HC. If it does not have a motor mount you can not mount a hand crank. If the motor mount is off center you can not mount a HC. If it has an internal motor you can not mount a HC. If the wheel is spoked you don't have to modify the wheel. If the wheel is solid you have to file a notch for the HC 'finger'. There are instructions on sew-classic's website for cutting the notch and she has HCs some times. I would recommend getting a needle guard, too. It is very hard to watch the needle and then glance at the HC and not get vaccinated.