welcome to the forum! Are you looking for information on how to remove and clean your carb or just how to clean it? I find youtube to be a wonderful resource as there are videos on there covering just about anything you would ever want to do. Carb cleaning is very simple and pretty standardized.
Do a search for cleaning scooter carb...or cleaning CV carb (the type of carb our scooters have).
Disassemble the carb, remove all the parts, especially rubber, spray all passages and openings with carb cleaner, blow out with compressed air and reassemble!
If your scoot starts fine and dies when you first open the throttle that is usually a clogged pilot jet. It is usually a #35 which means the inside diameter is .35 mm. Very small and easily clogged.