Man, do I ever wish I had caught this tread before this morning.. I just got my 1978 Jawa Babetta going yesterday I've been through all of these headaches trying to get it going allready. I just watched Momento so heres THE FACTS:
1. when siting on the saddle to your left side is the clutch, don't take this appart unless you have an hour or more to put the springs and arms back together.. From what I've read you don't have any issues with your clucth..
2. when sitting on the saddle to your left side is the coil (it looks like a can of V8 juice) it is powerd by your magneto which is the round thing with the magnets and wires that was under the black cap held on with the wire
Now.. I read your domain and it appears your in BC .. if that's true, is it cold out yet? I know it is here in NB.. due to this the only way I can get the ped to start and idle is to turn the air screw all the way in, set the choke and then pedal it.. if this works for you and it does start to turn over for a sec.. carefully without twisting the throttle (this will open the choke) push the ped back to wherever you're working on it and let it idle for a couple minutes.. then carefully turn the air screw out 1/2 turn.. let it idle longer 2-3 mins then use the trottle and try to rev the engine.. if this works.. go for a ride!.. if not start over (its the only method that works for me after dark when its too cold 5celcius or so) oh yeah.. the air screw in in the hole in your left faring right behind the choke button.. good luck .. If you do get it going let me know what your flatland top speed is.. mines hella-slow at about 17mph tops