平垫片和弹簧垫片，它们安装在防退膨胀管和螺栓六角帽之间的螺杆上；
The flat gasket and the spring gaskets are arranged on the bolt between the ante-receding expansion pipe and the hexagonal cap of the bolt.
如果要调节阀门的设置，则利用六角扳手松开锁紧帽螺丝，参阅图3。
To adjust the setting of the valve, loosen locking cap screw with hex wrench, see Figure 3.
将火花塞帽的内六角孔与火花塞的外六角对齐后稍微用力按压并顺时针旋转一点角度即可扣住火花塞。
The hexagon of spark plug and plug cap need align and then push down the spark plug cap and clockwise rotation it.
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