where is the air/fuel screw?

[xXDr_Z250Xx]

on the 36 mm carb, where is the air/fuel mixture screw located?

[tom slick]

underneath the carb pointing straight up. the problem is it is sealed with a plug from the factory so you have to remove the carb and pull the plug out. if you are going to go that far it would be a wise investment to install a Dynojet kit, "Burned jetting", and the 3x3 airbox mod.

[deeeejaaaaay]

.... and an extended fuel screw

[xXDr_Z250Xx]

it has been rejetted by the previous owner so maybe the plug is already gone.