How to adjust the idle speed of scooter to normal

1. When the throttle knob is completely loosened, there should be a certain free clearance, and an air filter should be installed to confirm that the performance of other components is in good condition and the oil products meet the standards. Then, start the engine to warm up and fully open the choke valve.

2. Adjust the throttle screw to ensure that the engine can run at a certain speed without stalling when the throttle knob is completely loosened.

3. Adjust the air conditioning screw to increase the engine speed as much as possible.

4. Adjust the throttle screw to reduce the engine speed as much as possible (125 displacement1400r/m; 100 displacement 1500 rpm). The adjustment parameters of mixed gas are not mechanical, even if it is the same batch and model, there will be differences. The screw of this car's mixture is screwed in to make it thinner, and drawn out to make it thicker.

5. As long as the adjusted engine runs smoothly, starts smoothly, accelerates smoothly, and the fuel consumption is normal, the color of the spark plug can also help to judge whether the concentration of the mixture is appropriate. Under normal circumstances, the color of the spark plug should be brown. It is abnormal to be too black or too white, but the most common one is too black.

6. Generally, the mixed gas screws of scooters are screwed to the end, and then withdrawn for two turns.

Extended data

Attention should be paid to the cleaning and prevention of throttle:

1, which should be dismantled and cleaned up.

2. Correct some misunderstandings of cleaning the throttle.

3. The fouling of the throttle is mainly engine oil vapor, followed by particles and moisture in the air. That is to say, using a qualified air filter and removing the crankcase ventilation pipe, the fouling speed of the throttle will be much slower.

4. The crankshaft is built in the crankcase, and the lower part is connected with the oil bottom. The working temperature of this part is about 100 ~ 180.