How normal is the idle speed of Ford New Focus? How to adjust the idle speed of focus?

The standard idle speed is 800 rpm. However, if the car is started at low temperature, the idle speed of the engine will be relatively high, reaching 1000r/min, or even higher, which is normal and belongs to rapid idle warm-up. After preheating, the idle speed will be reduced to 800 rpm. Idle speed adjustment must be carried out under normal conditions, such as normal engine temperature, proper valve clearance, normal ignition system, good sealing of all pipelines, full throttle opening and tight throttle closing. When adjusting, first loosen the throttle opening adjustment screw to make the engine reach the lowest stable speed. Then screw in the idle speed adjusting screw with a screwdriver, and then slowly unscrew the idle speed adjusting screw when the engine is about to stall, so that the engine can run smoothly and reach a high speed. Then loosen the throttle opening adjustment screw to make the engine speed as low as possible. Then adjust the idle adjustment screw to increase the engine speed. Repeat this process until the throttle opening is minimum and the engine runs at the lowest stable speed. Finally, increase the speed and suddenly close the throttle, so that the engine can still turn without stalling.