Ok, so ive got the flywheel off and the engine is all in pieces now. I took a bit of a different approach to the situation; i used a pair of soft-jaw multi-grips to hold the starter cup and a ratchet to undo the nut. I couldnt get my hands on any Penetrene but used a heavy-duty Inox spray which worked a treat. I think i got pretty lucky because the flywheel came off pretty easily, without the use of a extractor. I didnt get a chance to take photos because i didnt have a lot of time to work with. Im pretty sure i'll rebuild the engine again in the not to distant future (i'm modifying the engine for a mini bike) and i'll photograph the process then
