You need to do some investigating. Is the piston moving at all? try placing a piece of dowel in the plug opening. Then remove the stator cover on the left side (larger of the two round covers). You will see the flywheel and a 14mm nut in the center of it. If you rotate that nut with a wrench you should get movement from the piston as they are directly connected by the timing chain, bypassing the clutch. If the flywheel does not turn something is stuck, most likely the piston. We need more information.

Doug - Olympia - Washington
 I don't know how many CTs I have.