Is this one similar to your bike?
http://www.chinariders.net/gallery2/...serialNumber=1
If so, it looks to be one of the "generic" China bike 200cc motors.
Lots of links to parts suppliers in the forums.
Check the Dual-Purpose pages for parts lists.
http://www.chinariders.net/modules.p...=viewforum&f=1
Personally, I've bought parts from:
Hooper Imports
http://www.hooperimports.com/
Rabbit Scooters
http://www.rabbitscooters.com/
and off Ebay.
This member has a website and has offered to find parts if he doesn't have it in stock.
http://www.chinapartscanada.com/
Good luck and keep us posted on progress.
Bill