Quote Originally Posted by Lew_Alcindor View Post
I hope you did not mess with the A/F ratio. As mentioned, there is a screw for idling which is different from the A/F screw.

If I am correct, there are some carburetors which allows for higher RPM during cold start then gradually lowers RPM as the engine gets warm. So that maybe your case.

But if you are not sure, have your carb cleaned or overhauled. Carb is a PITA for DIY.
There are two screws at the face of the carb which I adjusted counterclockwise then clockwise. Parang trial and error lang ginawa ko until it reached the desired rpm of 800. the problem is the next day when I test drive the vehicle until it reached its operating temperature, the rpm was back at 1,200. is there other screw for the A/F ratio?