你最好先检查开关。

You'd better check the swith first.

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打开零点检查开关将会引起电荷读数的突然变化，称为“零跳”。

Opening the zero check switch will produce a sudden change in charge reading known as "zero hop."

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把行程开关摇臂螺母松开，将摇臂往前调即可，如多次调整无效，请检查开关是否损坏。

Then loose the rocker nut of journey switch, and adjust the rocker to front, if after adjusted for many times still not available, then please check the journey switch whether was damaged or not.

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