TaoTao Paladin 150 fuel line problem?

[Neo2Remember]

Okay so I'm new to the forum I actually registered specifically for an issue I'm having with my TaoTao Paladin 150 scooter. Its about a year old and only has about 700 miles on it. So I'm riding it one day and It's starts acting real funny then a screw from under my air filter on the left side of the scooter falls out and is just gone. At this point it littered quite a bit then eventually just stopped like it ran out of gas. I don't know what the screw was or how to even find that part and replace it the best I can do is ask for help. I got some pictures to try and show what I'm talking about.