The degree of vacuum at the throat main nozzle and the idle nozzle disappears, the fuel is no longer ejected, the fuel is replenished until the pressure in the oil chamber is equal to the atmospheric pressure, the diaphragm is in an equilibrium position, and the pressure-regulating lever adjusts under the action of the pressure-regulating spring force. The pressure valve shuts off and starts to enrich. When starting, it is required to supply a relatively rich mixture. Therefore, before starting, it is necessary to press the starting thickening rod to open the pressure regulating valve. The fuel flows into the fuel chamber under gravity and overflows from the nozzle. Increase the effect.
When starting, you can also close the throttle to increase the degree of each nozzle to enhance the pumping effect of the fuel, to provide excess fuel, thereby playing a strong role. Immediately after the start, the damper should be opened. Otherwise, the engine is shut off due to the mixture being too rich, and the adjustment of the carburetor to adjust the carburetor is appropriate, which will directly affect the engine's starting idling acceleration power consumption and so on.
The factory's pneumatic fire extinguishing machine has been adjusted. After the carburetor cleaning and maintenance, Sichuan vacuum pump should adjust the oil needle to its original position. Since the engine is running at idle speed, the mixture gas concentration is controlled by the idle oil needle, the screw is turned into a lean speed, and the screw is turned into a thicker speed. It is adjusted until the engine can run stably at idle, and it can also get slick during acceleration. The transition to increase the throttle, the engine does not turn off so far.
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