When the hook of the threader plate is damaged, change or adjust the part as follows.
To change the threader plate:
Raise the needle to its highest position and lower the threader knob A to its lowest position.
Loosen the screw B and remove the threader plate (Fig. A).
To change the needle threader:
If the hook of the threader plate F touches left or right side, loosen the screw D and adjust
the hook position (Fig. B).
If the hook of the threader plat F touches the top or bottom side of the needle hole, loosen
the screw E and adjust the hook position (Fig. C).