girashee

I have a problem with my banshee, i just rebuilt my motor, he have run 1 hour and when i tried to start him this morning a bizzare sound came from de transmission/kickstart. When the engine run, the sound disapear but i just let him run at the neutral. i just tokk a video of this sound if someone can help me. ( sorry for my poor English I'm a french.) http://www.youtube.com/watch?v=pCt3aKNuLU0