[SamUK]

Try this, it may help you get a better understanding of what each part does and why correct adjustment is critical.

https://www.google.co.uk/amp/jalopnik.com/how-a-carburetor-works-496394819/amp

Edit: No carb is the same but they all work in very similar ways. I was asking questions on here not so long back, your not on your own needing help