Give Jim at Sunright a call.
http://www.sunright.net/index.asp
http://www.scrappydogscooters.com/LH...257___275.html
P.S. you may not know that the Linhai 260 is a copy of the old Yamaha YP 250 and that is what most folks use for the repair manual.
http://nans.1gb.ru/motomanual/Yamaha...e%20Manual.pdf