Proficient Homework

how to shave the valve on the correct machine.

First, put the coarse powder on the valve surface evenly. Then insert it into the valve hole, and plug the valve end into the oil hose. And the other end of the oil hose plug in a screwdriver to make it easier. Then turn it left and right in an up and down motion, until the friction sound doesn’t sound harsh. Then close the valve to test whether it is still translucent or not, by filling fuel into the shaved valve, then spraying air from the air compressor towards the valve filled with oil from the opposite direction. If you don’t see the wind coming out, then the valve is ready to be installed

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