is it a chipped igntion model ?it should be but sometimes people change the cdi/immobilisers for non chipped cdi's.The immobilisers always play up on these bikes i would say there are more posts on non sparking speedfights than any other post on this forum.The key should have a chip in the top of it too and also the primary ignition coil plays up on these and they just seem to give up after a while.how many keys do you have with it and what colours are they.
adam bike doctor(of milton keynes motorcycle centre), January 2011