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Fig. 15、 Next please
screw the nut by the
spanner.
Fig. 16、screw the nut to this place by
hand , and it can't be moved ; then
force to screw the nut by the spanner。
Fig. 13、 screw down
the nut gradually by
hand
57
Fig. 14、please screw the nut until can't move
by hand，refer to the picture's position。If not
move when screwing the nut about 3~4 circles
by hand, it is possible that the bell-mouth
doesn't aim at the valve port ， and then operate
it again from scratch 。
The following pictures are the
wrong operation. such as Fig. 16、
Fig. 17
Fig. 17 、forcing to screw the nut by
spanner results in the rupture of the
bell-mouth.
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