On my sp 125 the cam gear was attached to the cam by means of screws if your is like that, which it does in this 350 "
http://houseofmotorcycles.bikebandit..._id~706269.asp " So just remove the cam gear sprocket and take bottom end off take magneto or whatever is down there..
Thats what i did with my 125 so if its completely off the wall donnt listen to me