Where is the mixture screw of lc80 carburetor?

Lc80 carburetor mixture screw There are two adjusting screws on the carburetor, one is long and the other is short. The long one is used to control and adjust the idle speed, that is, to adjust the intake air when the engine is idling. Short ones are used to adjust the concentration of mixed gas, generally the looser and thicker. During the festival, it is necessary to stabilize the idle speed in the warm-up state first, and then slowly fine-tune the mixing ratio screw. If the idle speed is high, it means that you are adjusting in the right direction, if not, then vice versa.

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When the engine is in the intake stroke, the intake valve opens, the piston descends from the top dead center, the cylinder volume increases, and the air pressure in the cylinder is less than the external atmospheric pressure. Under the action of pressure difference, air flows into the cylinder from the intake pipe and intake pipe of the carburetor. When the air flows through the throat of carburetor with small cross-sectional area, the velocity increases and the pressure decreases.

The amount of mixed gas entering the mixing chamber changes with the throttle opening, so the engine speed and output power can be controlled by adjusting the throttle opening. The throttle is operated by the throttle knob on the right side of the handlebar through the wire rope. When the handlebar rotates in the driver's direction, the throttle opens and the engine speed increases, otherwise the engine speed decreases.