Nearly any part for the Chinese diesel engines can be ordered from this contact in Canada. He takes paypal as well as Visa and Mastercard.
Have your information ready when you call or email. You should provide the engine brand name, model, and part number from your manual.
He can help you even if you do not have a parts manual and parts number, it just takes a lot longer without part numbers.
His name is Kim, the phone number is 1 888 909 5300
His email address is pgsaw@shaw.ca
flywheel
Another source is http://chinadiesel.com (http://chinadiesel.com)