Where is the fuel mixture/ idle screw??

[ColemanCT200u]

I have a 6.5 HP 196cc Coleman ct200u, and I have no idea how to adjust the idle.

I've been having a few problems on my bike, (backfiring, stalling with throttle, excessively long warm up time, backfiring on deceleration, running better with the choke on, sloppy idle) and I think most of them can be attributed to my engine running too lean

I cannot find a fuel screw anywhere, and i have yet to take the carb apart, because I don't want to unless I need to (inexperienced). I have heard that the engine is very common and goes by other names, such as the Honda Clone, (and maybe a B&S, not sure) so there has to be someone who's run into this before

Is there another way to increase fuel flow? Am I wrong about everything?
I am new to this so any help is appreciated, thank you

 

[Not so mini bike]

To adjust the idle turn the big black screw on the top of the carb with a Philips screwdriver. It adjusts how far the throttle butterfly opens before you engage the throttle. Screw to the right increase to the left to decrease.

 

[ColemanCT200u]

Thank you so much, I'll try this when I get home

 

[minikenny]

And there is no mixture screw, your carb has fixed jets. You replace with different size jets to adjust the mixture, or you can go bigger with a drill.

Deposits in the carb or an air leak will cause it to run lean.