My bike has stopped starting so I checked fuel, carburettor, spark plug and so on. I have read up about it and it sounds as if it could be the stator or the starting coil. How would I check to see if they are faulty without replacing them?

First, have you tried a new spark plug? Does it have spark?

I have and there was still no spark

Splatshop has this test procedure for the Leonelli 2 map stator which I believe is what is on your bike.

They also advertise rebuilding service.

http://www.splatshop.co.uk/leonelli-twin-map-stator-testing

Disconnect kill switch.

I have disconnected the kill switch and still nothing. Have gone through the test suggested above and the brown wire in the first test does not work