We had CZ and Jawa motorcycles over here with that kickstart system back in the 70s and early 80s.
It had a good party trick for the unwary. Don't let your foot slip off the kickstart pedal at the bottom of its stroke. If you do, the pedal returns smartly, flicks outward to the the gearchange position, and the mometum of the the lever carries it on downwards to engage first gear. That either stalls the engine again for you, or if you had too much throttle and revs on, the bike promptly moves off with a surprised rider hanging on.
Heigh-ho!!
Graham