How to adjust the mixing ratio of the new Honda carburetor

Steps. 1. First check the tight connection of the connectors related to the carburetor to ensure that the carburetor suction is normal and there is no air leakage or suction blockage.

2. Rotate the carburetor mixing ratio screw clockwise to the end, and then rotate the circle counterclockwise.

3. Start the engine and let the engine preheat for 10 minutes to make the engine reach the normal working temperature.

4. Adjust the idle adjustment screw of the carburetor so that the engine speed is the lowest and can be kept without stalling.

5. Repeatedly adjust the carburetor mixing ratio screws left and right to make the engine speed reach the highest. In this process, some friends will find that after the mixing ratio screw is adjusted to a certain position, and then rotate the mixing ratio screw in the counterclockwise direction, the idle speed will not change, and the mixing ratio screw can stay at the position when the idle speed is just adjusted to the maximum.

6. Repeat the operation repeatedly to make the engine idle stable.

7. Rotate the throttle handle rapidly, refuel violently, and then release the throttle, in this process, observe whether the engine acceleration and deceleration are stable, if it is stable, the adjustment is successful, if it is not stable, repeat the operation of 4 to 6 steps until the engine acceleration and deceleration are stable.

8. When the engine is idling, it should be kept for 5 minutes without stalling, after the idle speed is adjusted, some vehicles may idle very low, at this time, the idle speed should be slightly higher, keep it at about 1000-1500 rpm, because the idle speed is too low, the engine may stall when the accelerator pedal is idle when the high-speed driving is loose, the reason is that the air pressure of the air inlet is reduced at high speed, which affects the gasoline of the carburetor idle hole.

9. In the process of idle speed adjustment, if the exhaust pipe has the phenomenon of discharging the gun during the emergency refueling, the mixture is generally too thick, and the carburetor mixing ratio screw can be rotated counterclockwise. After the carburetor is adjusted, you can carry out a road test of about one kilometer, after the road test is completed, remove the spark plug, observe the color of the ceramic under the center electrode of the spark plug, if it is brick red, it is normal, if it is white, the mixture is thin, if it is black, the mixture is thick.

The carburetor of the New Honda 100 bent-beam car.

The larger one with the spring is the one that regulates the idle speed.

Next to the smaller, the shorter exposed is the blended one. The mixture screw is generally screwed to the end and then withdrawn about one and a half times, adjust the idle speed to start the engine to preheat, adjust the idle speed to about 1500 rpm after the hot car, and feel that the engine runs coherently and smoothly.

Five sheep Honda. The 125 motorcycles and the New Continent Honda 125 motorcycles both have different models that use carburetors.

There are differences in types, not all of them are the same, but even for these different models of Honda 125 motorcycle carburetors, their mixing ratio screw adjustment methods are basically the same. However, the mixing ratio screws of motorcycle carburetors have generally been adjusted at the factory, and there are no special circumstances that do not need to be adjusted. If it is really necessary to adjust, it is best to go to the after-sales service or a professional place to repair the motorcycle, and the maintenance personnel will adjust it according to the actual situation.

All kinds of Wuyang Honda and New Continent Honda's 125 motorcycles, their carburetors are plunger carburetors and vacuum membrane carburetors, and their carburetor mixing ratio screws are clockwise.

The general adjustment method is to screw the mixing ratio screw clockwise to the end, and then withdraw counterclockwise about two and a half turns. However, it should be noted that even if the hand base is exactly the same as that of the same brand and model, the number of adjustment turns of the mixing ratio screw is not necessarily the same, and some will be slightly different, so if there is a problem, it needs to be adjusted according to the actual situation, rather than simply adjusting to a certain number of turns.

Adjust the carburetor of the motorcycle, to the vehicle and the engine and other related parts of the condition that there is no problem, otherwise the adjustment results will be inaccurate, sometimes the mixing ratio of the screw adjustment, but also with the idle speed.

etc. The basic method is to ensure that there is no problem in other aspects, first start the engine to preheat, wait for the car to heat up the carburetor mixing ratio screw clockwise to the end, and then exit two and a half turns, on this basis, the idle speed adjustment is set at 1500 rpm, and then the left and right fine-tuning mixing ratio screws to the highest idle speed, and then adjust the idle speed to 1500 rpm, and then you can repeat the above adjustment again, and finally adjust the idle speed to 1500 rpm. If there is no change in the idle speed when fine-tuning the mixing ratio screw, then adjust the mixing ratio screw to the position of two and a half turns.

By changing the atmospheric pressure inside the engine and carburetor, it is possible to change the pressure and burn to allow fuel and air to flow through the carburetor. The atmospheric pressure will diffuse from high pressure to low pressure. When the piston of a two-stroke engine is at the top dead center, a low pressure is formed under the piston in the crankcase.

At the same time, this low pressure will also cause low pressure in the carburetor. Because the pressure outside the engine and carburetor is relatively high, air will rush into the oiler and enter the engine until the pressure is equalized. The air flowing through the carburetor will drive the fuel, which will mix with the air.

The causes of poor motorcycle transition and the elimination methods are as follows:

1. The idle measuring hole, idle oil circuit, main measuring hole and transition hole are partially blocked.

Reason: The idle measuring hole, idle oil circuit, main measuring hole and transition hole are partially blocked, which makes the oil supply of the carburetor related to the oil system dilute, causing poor transition.

Exclusion method: Clean according to the carburetor cleaning method mentioned above.

2. The foam pipe is blocked.

Reason: The function of the carburetor foam tube is to promote the mixing of gasoline and air, after the foam hole on the foam tube is blocked by impurities, the mixing effect of gasoline and air is reduced, the atomization quality is reduced, and the transition is poor.

Exclusion method: Clean according to the above-mentioned carburetor cleaning method can be called section shed.

3. Poor idle speed adjustment.

Reason: The oil supply of the carburetor during the transition process mainly comes from the idle oil system, and if the idle speed is not adjusted properly, the transition performance will be affected.

Exclusion method: Adjust according to the above-mentioned idle adjustment screw adjustment method.

Summary. You can first adjust the idle speed to about 1000 rpm, and then adjust the mixing ratio screws on the left and right, and the idle speed will increase or decrease when adjusting, so adjust it to a place where the idle speed will be the highest. Then reduce the idle speed back to the speed you think is appropriate, and then turn the mixing ratio screw, regardless of counterclockwise or clockwise adjustment, the speed will drop, so that it is the best mixing ratio.

Hello, I'm helping you sort out the answer to your question, please wait a while You can first adjust the idle speed to about 1000 rpm, and then adjust the mixing ratio screws on the left and right, and when adjusting, the idle speed will rise or lower the stool, and then adjust it to a place where the idle speed will be the highest. Then reduce the idle speed back to the speed you think is appropriate, and then turn the mixing row thickness than the screw, regardless of the counterclockwise or clockwise adjustment, the speed will drop, so that it is the best mixing ratio.