I had the same thing from Sunny Sports in CA. The 150cc they shipped me,there # MC-D150H, had no Carburetor drain screw in it. I think when they shipafter testing, as mine had 1.2 miles on it, they drain the fuel so they canship it. I bet the guy never put the screw back in and shipped it like yours Idumped gas on the floor until I smelled it and thought I flooded the Carb Ifyou look at your Carb you will see a tube leading off the very bottom of thecar bowl towards the ground. There should be a taper threaded 6mm screw with an“O”- ring on it and a slot head to screw into the metal fitting on the end ofthe tube. I got one from a local scooter store in town so I could start mine.Of course they messed up the MSO with the wrong cc’s on it so I can’t registerit yet either and I’m frustrated but looking forward to joining the Chinamotogroup of riders.

Good Luck