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Carburetor

Carburetor

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How does a carburetor work?

1. The carburetor is a key component in the engine, and small changes may affect the performance of the entire vehicle. Therefore, during the disassembly and assembly of the carburetor, appropriate tools must be used with moderate force to prevent parts from deforming. The disassembled parts should be arranged neatly in order to prevent missing or wrong installation during assembly.
2. Carburetor cleaning should be done in a clean place. First, wipe the outer surface of the carburetor. To clean the internal parts, use special carburetor cleaning agent or industrial gasoline. In addition to impurities, pay attention to cleaning the gasoline colloid on the surface of the parts. Blow the cleaned parts with compressed air and do not wipe them with cloth or paper that will produce burrs to prevent re-contamination. It is forbidden to poke the clogged holes with hard objects such as steel wires to prevent changes in carburetor performance caused by changing the hole diameter. Gasoline or compressed air should be used to clean and flush them out.
3. During the assembly process of the carburetor, the connecting screws of the float chamber and the connecting screws of the carburetor and the engine must not be tightened once. They must be tightened several times. The general tightening torque is between 12N.m and 15N.m. Otherwise, the joint surface will be deformed and air or oil leakage may occur. The tightening torque of measuring hole parts is generally between 1.5N.m and 3.0N.m. Excessive tightening torque will damage the threads, cause deformation of the parts, and even produce metal shavings, causing secondary pollution and affecting the performance of the carburetor.
4. During the process of cleaning the carburetor, if there is a lot of sediment in the carburetor float chamber, it is often caused by the failure of the gasoline filter. At this time, the fuel filter should be checked. If it is confirmed to be invalid, the fuel filter needs to be cleaned or replaced with a new one.
5. If the motorcycle is not used for a long time, the fuel in the carburetor float chamber must be drained to prevent the gasoline colloid from condensing and causing carburetor failure. In addition, it is important to emphasize that since the position of the idle speed adjustment screw has an important impact on motorcycle emissions, idle speed, transition, fuel consumption and other performance, it is generally prohibited to turn the idle speed air adjustment screw when cleaning the carburetor. If you really need to remove the idle air adjustment screw, you should first tighten the adjusting screw to the bottom, remember the number of turns (accurate to 1/8 turn), and return it to the original number of turns during assembly.

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