如果气门间隙需要调节，松开摇臂调节螺丝上的防松螺母，转动调节螺丝直到测隙规滑动时稍带阻力为止。
If valve clearance needs to be adjusted, loosen the locknut on rocker arm adjusting screw. Turn adjusting screw until feeler gauge slips with a slight drag.
当凸轮轴转动时，凸轮凸角转到气门挺杆下面，使挺杆上举，挺杆推动推杆。
As the camshaft turns, the CAM lobe comes around under the valve lifter. This raises the lifter, which in turn pushes upward on the push rod.
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