1 and 4 Your main and slow jet. And yes then just screw them back in and snug. I'm not sure on your bike, but sometimes 3 is removable and there is a screen behind it that I've seen crap in before. That is the float needle seat. Also the air/fuel screw can come out. inside number 6. But there is most likely a plug on top of it that needs to be removed. A drill is needed for that. That will allow you to clean that passage as well.