How to adjust the idle speed of Yutong 6 127ha?

Adjustment method of engine idle speed: When the engine idle speed is unstable, it should be adjusted when the engine temperature is normal and the oil circuit is trouble-free. (1) Slowly loosen the throttle opening adjusting screw with a screwdriver (commonly known as screwdriver, screwdriver). When the engine is about to turn off, screw it in a little bit to keep the engine running. (2) Adjust the idle air mixing adjustment screw. Let the engine run faster. (3) Turn out the valve opening adjustment again, so as to achieve stable idle work and accelerate without flameout.