Tried to install the TW200 carburetor yesterday and noticed the pull out choke will not work because the scooter frame is in the way. I had to take off the knob to fit the carburetor but there is no room to pull out the choke. I tried to start it a couple times but I don’t know what the other 2 connections on the carburetor are for. I assumed they are just air vented to the atmosphere. I only connected the fuel line. I haven’t checked the jet nozzles l yet but will do this tonight. It has not started yet. Also the throttle cable is too short so I need to order a longer one to make it work.