Adjusting the carburetor according to the manual
Service manual for the Chinese GY6 50cc scooter with a 139qmb engine:
(First link in the list of instructions on this page)
http://139qmb.blogspot.com/p/139qmb.html
Service manual for the Chinese GY6 50cc scooter with a 139qmb engine:
(First link in the list of instructions on this page)
http://139qmb.blogspot.com/p/139qmb.html