
So, having made up my own puller, using bent M8 threaded rod and nuts, to hook behind the rotor; a piece of M10 threaded rod, with nuts to act as the central pressure screw and a piece of 65mm x 35mm x 3mm MS box section, drilled to keep all the threaded bits at the correct distances apart, I was able to "pop" the rotor off the taper on the crank, with relative ease.
It appears that this stator, from it's position, controls the ignition timing using the exposed coil, on the right, to acheive this; the rest of the stator appears to be encapsulated. There is a single cable coming from the stator, with 2 yellow wires that I assume are the feed to the regulator/rectifier for the battery and a single red and blue wire that I assume are for the ignition coil/CDI? However, the rubber insulation is perished, cracking and exposing tinned copper multi-strand cores on all 4 coloured wires.

There is pitting of the encapsulating material and as I obtained the whole machine in "big lumps", I have no idea whether the generator/ignition was functioning, or the reason for the demise of the machine. There is also no sign of a CDI or coil in the tea chest, but there is a regulator/rectifier.
So, I was going to replace the entire generator/ignition system, using an Electrex set up. Does anybody have any opinions/experience of the Motoplat set up that would disuade me from going down the Electrex replacement route?
I have attached images of the Motoplat unit fitted at present, for others future reference/information.
Thank you for your time.
Good health, BillR