Tricky little job connecting that up - took a very long pair of long nose pliers and some patience.
But now I can get spark/no spark depending on the position of the throttle - which is a good result.
Not sure what I've done in the process though - now the mower will fire up, run for about 1 - 3 seconds and then just die.... it was running well before - but a little bit fast - I even mowed my lawn with it.

What a crappy hobby this is

Polybus