Chigo CS-25V1A-H1; CS-35V1A-E2; CS-50V9A-S; CS-70V9A-T - Page 61

Fig. 19、screw down
the nut gradually by
hand
Fig. 20、please screw the nut until can’t move by hand，refer to
the Figure’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 。