How to adjust the idle speed in Li Xia?

Before adjustment, check, start and preheat the engine to make its coolant temperature reach 75-85 degrees (at this temperature, the fan has not started to rotate); Pull out the carburetor thermostatic valve vacuum hose, completely open the choke valve, make the engine idle, and completely loosen the accelerator pedal. At this time, the engine is idling at 800 rpm. If the idle speed does not meet the standard, it should be readjusted. When adjusting, remove the limit cap of the idle speed adjusting screw and screw it clockwise to the end, and the engine will shut down. Then, loosen the idle speed adjusting screw four and a half times counterclockwise, start the engine, and unscrew the high throttle adjusting screw until the engine speed reaches. Screw in the idle speed adjusting screw clockwise until the engine speed is 800 rpm; Finally, install a new idle adjusting nut and insert the vacuum hose back. How to Check and Adjust the High Idle Speed of Li Xia Engine This car should be overhauled every 20,000 kilometers. When the idle speed needs to be adjusted and checked, start the engine to warm up, and turn off the engine when the coolant temperature reaches 75-85 degrees. Then, pull the choke knob outward and start the engine, push the valve rocker arm to the second tooth of the fast idle cam, and the accelerator pedal is completely released. At this time, the engine is running at high idle speed. Its speed should be 1800-2200r/min. Push back the throttle knob, and the engine should run at idle speed after stepping on the accelerator pedal. If the fast idle speed does not meet the above standards, the fast idle speed can be adjusted by turning the fast idle speed adjusting screw.