Outboard Carburetor Needle Valve

The needle valve and the float are connected together, when the oil float will float, drive the needle valve up, plug into the oil hole, the needle valve is broken will leak oil, to replace one. In practical use, the failure rate of the carburetor is often not low.

There are two main reasons for this:

1, because all the operating characteristics of the engine are related to the carburetor, such as acceleration, transition, fuel consumption and so on. Therefore, when judging the cause of the performance failure of the motorcycle, the failure of electrical parts or other mechanical parts is often mixed with the carburetor, and the carburetor is replaced for the carburetor fault. For example, the failure of the filter makes the impurities block the carburetor, and the new carburetor is eliminated, but the fundamental problem is not solved.

2. The quality problems of related parts greatly shorten the service life of the carburetor. Such as the reduction of cleanliness, increase the wear of the carburetor parts and so on. Motorcycle carburetor several common fault phenomena are: starting difficulties, idle instability, poor transition, lack of power, oil leakage, high fuel consumption, the above only selected the carburetor fault for analysis. But in fact, from the point of view of the whole machine, there are many factors causing the above failure phenomenon. Such as starting difficulty: ignition system disorder, spark plug electrode gap change and so on will cause starting difficulty. Such as idle instability: the motorcycle machine factory to reduce the sound of the engine cylinder head, the engine valve gap is often adjusted too small, resulting in the deterioration of the engine inlet and exhaust state, idle instability or even no idle phenomenon. Users should analyze it specifically according to the vehicle fault condition.