Hi Norm,
Yes the waveform is from the engine's original coil that I brought down to you with a couple of new old stock replacements. In fact, it is still on that mower & the last I heard from them was that it is running superbly, apart from the fuel flooding once due to the plastic needle sticking open.
I do have a non-running cup starter engine that I will compare with the later side pull start engine.
Unfortunately, old Victa's are really hard to find down here as the scrap metal people won't let you in to their yard due to occupational health & safety regulations.
