During the assembly process of the carburetor, the connecting screw of the float chamber, the connecting screw of the carburetor and the engine should not be tightened at one time, but must be tightened several times. Generally, the tightening torque is between 12N.m and 15N.m. Otherwise, the joint surface will be deformed, and air leakage or oil leakage will occur. The tightening torque of measuring hole parts is generally between 1.5N.m and 3.0N.m. Excessive tightening torque will damage the thread, cause deformation of the parts, and even produce metal chips, causing secondary pollution and affecting the performance of the carburetor.
In the process of cleaning the carburetor, if there are many deposits in the float chamber of the carburetor, it is often caused by the failure of the gasoline filter. At this time, the gasoline filter should be checked, and if it is confirmed that it is invalid, it needs to be cleaned or replaced with a new gasoline filter.