The fresh - air inlet was usually the crankcase breather cap.
新鲜空气进口一般是曲轴箱通气盖。
Spread air cap and put into the box, air cap facing down.
展开气泡垫并将其放入箱中，气泡面朝下。
Wrap an inner box with two pieces of air cap & into carton.
用两块气泡垫将一个内盒裹住后并放入外箱中。
Wrap an inner box with two pieces of air cap & into carton.
用两块气泡垫将一个内盒裹住后并放入外箱中。
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