Make sure you have the right spark plug (anyone know what the correct plug is?).
If you can feel a jolt when you turn the engine by hand, you probably have enough juice to get a spark. If you don't trust your ignition switch, you can temporarily disconnect it (the engine will run without it). I don't think this is your problem though because if it were shorted out you wouldn't feel a jolt at all.
<a href=" https://www.mopedarmy.com/forums/discuss/1/9931/9931/">Fred's guide</a> is the place to start.