Manual choke cable
For most engines, to start them, you want more fuel in the chamber. So you close the choke to start the engine. Once the engine has warmed up, it doesn't need as much fuel, so you open the choke.
Typically you want to open the choke as soon as possible to allow a greater amount of air into the chambers as leaving the choke closed wastes fuel.
Pull off the cover to the air filter. when you flip the choke switch, you should see a butterfly type valve open and close. When it's closed it will cover the hole of the carburator. When it's open, the hole will freely allow air to flow through the carburator.
So you want the choke closed (flap covering the hole) when you first start the scooter. (It should be easier to start too). Once you get the engine started, then open the choke to minimize wasting fuel.