Started my freshly rebuilt 200T last night. All went very well , turned it off and then started it again. I gave it two revs and then it just stopped dead in it's tracks. I thought the worse at first but then I pulled on the starter recoil/fan housing and it felt real weird. I proceeded to remove the housing to find that my flywheel had worked itself loose. I guess I forgot to tighten the retaining nut , . I pulled the flywheel out to find that I had sheared the keyway. My Q is , would the loose nut , causing the flywheel to work itself loose cause the shearing of the keyway? I still have a little bit of keyway in there but can not seem to get it out. Any suggestions? Thanks in advance.