carb adjustment

[toyclean]

Hi there - I need help again. I wasn't get many mpg so I did some basic stuff with my carb.

I checked it and went back to a standard size main jet to fit my now standard T5 engine. All the jets, float and filter are fine but now I need to get it running right. I know how to adjust the throttle stop screw but am not sure what I need to do with the mixture screw adn how adjusting the two screws work together. I've read Haynes but still don't know, lol...

So, any tips folks?

[vespa]

turn air screw all the way in then turn it 1 and a half out wap back the throttle if its nice a crisp leave it if its boggyy turn it out some moredo this tho in quater turns till you can pang back the throttle with no bog!