How do you tune carburetor for Nissan sunny 130y?

To tune the carburetor on a Nissan Sunny 130Y, start by ensuring the engine is at operating temperature. Adjust the idle speed using the idle screw until you achieve a smooth idle at the specified RPM. Next, fine-tune the air-fuel mixture by turning the mixture screw in or out until the engine runs smoothly and responds well to throttle input. Finally, check for any vacuum leaks and ensure the choke operates correctly for optimal performance.