Adjustment methods and skills of carburetor

Adjustment method and skill of carburetor: screw the "L" adjustment valve of carburetor clockwise to the end and set the initial value of parameter value. After the initial setting, rotating counterclockwise to the highest speed is the turning point when the speed is adjusted from high to low.

Adjust the idle speed of the engine to about 900 rpm. Fine-tune the mixing ratio screw left and right, and the idle speed will rise and fall back and forth during the adjustment. Adjust the mixing ratio screw to the maximum idle speed and stop.

Finally, the idle speed will be reduced to an appropriate speed. At this time, when turning the mixing ratio screw, if the speed will decrease when turning left and right, then this is the best mixing ratio of the carburetor.

Also check whether the connectors related to the carburetor are tightly connected to ensure that the carburetor sucks air normally, and there is no air leakage and suction blockage. Turn the carburetor mixing ratio screw clockwise to the bottom, and then turn it counterclockwise 1.5 turn. Start the engine, let it warm up for 10 minute, and make the engine reach the normal working temperature.

Repeatedly adjust the carburetor mixing ratio screw left and right to make the engine speed reach the highest. In this process, some friends will find that after adjusting the mixing ratio screw to a certain position and then rotating the mixing ratio screw counterclockwise, the idle speed will not change again. At this time, the mixing ratio screw can stay at the position where the idle speed has just been adjusted to the maximum.