Setting The Needle Punch Into The Middle Of The Needle Groove In The Throat Plate In Longitudinal Direction; Setting Of The Needle Punch Into The Middle Of The Needle Groove In The Throat Plate In Transversal Direction; Setting Of The Zigzag Stitch Mechanism For The Right And Left Position - Duerkopp Adler 523 Instructions Manual

15. Setting the needle punch into the middle of the needle groove in the throat plate in longitudinal direction

(Fig. 5)
Caution! Danger of injury!
Switch off the main switch! Before starting the setting operation, wait until the motor stops!
This setting is to be done after having set the zero zigzag stitch. In turning the hand wheel set the needle bar with the needle into its bottom
position. The needle is to stand in the middle of the needle groove both in the longitudinal and in the transversal direction. When this is not
so in the longitudinal direction (in the direction of feeding the sewn material), remove the front guard after having unscrewed two
fastening screws and loosen the securing screws (2) and (3). Now it is possible, by a fine turning of the screws (4) on the front and on
the rear side of the arm, to set the needle into the middle of the groove in the throat plate in the longitudinal direction Tighten thereafter
the screws (2) and (3) and proceed to the mounting of the front guard.
Notice!
When setting the needle position in the throat plate, not tighten fully the adjusting screws (4). Between these screws and the needle bar
holder there must be let a minimum clearance, so that the side movement of the needle bar holder with the zigzag stitch is without any
resistance. Without observing the necessary clearance between the adjusting screws (4) and the needle bar holder the mechanism may be
damaged. Check up the space between the hook point and the needle.

16. Setting of the needle punch into the middle of the needle groove in the throat plate in transversal direction

(Fig. 15, 16)
Caution! Danger of injury!
Switch off the main switch! Before starting the setting operation, wait until the motor stops!
This setting is to be done after having set the zero zigzag stitch. In turning the hand wheel set the needle bar with its needle in its bottom
position. The needle should stand in the middle of the needle groove both in the transversal and in the longitudinal direction. When it is not
so, remove the guard (1) from the front part of the arm after having unscrewed the screw (2) and the plug from the rear opposite part of
the arm. Loosen thereafter both screws (3) and set the complete needle bar holder (4) in such a way, so that the needle is in the middle
of the groove of the throat plate in transversal direction. After having set this, tighten the screws (3) and proceed to the mounting of the
guard and the plug. Check up the needle punch with the maximum stitch width and bear in mind to have a clearance between the needle
and the groove side in both needle positions. When turning the hand wheel and with the set zero zigzag stitch, the needle bar with the
needle should not perform any side movement. If it is so, then it is necessary to set the basic zero position of the driving mechanism of
the zigzag stitch. But this setting is of a larger extent, it needs more time and is to be done by a mechanician with a good knowledge of the
machine having some practice in the sewing machines line.
17. Setting of the zigzag stitch mechanism for the right and left
position (Fig. 17)
Caution! Danger of injury!
Switch off the main switch! Before starting the setting operation,
wait until the motor stops!
After having set the middle position and the maximum width of the zigzag
stitch, we can proceed to the setting of the left and right position of the zigzag
stitch. Remove the zigzag stitch mechanism guard after having unscrewed
two fastening screws. After having loosened the arresting lever (1) set the
zero zigzag stitch using the lever (2). In turning the hand wheel set the needle
bar with its needle into its bottom position. Shift the lever (3) upwards, namely
in its right position. When shifting this lever, follow up the movement of the
needle in the groove of the throat plate, until the needle shifts in its extreme
right position. After having loosened the screw (4) set the stop (5) in such a
way, so that the projection fits into the recess in the lever (3). Tighten then
the screw (4) up. Proceed in a similar way when setting the left needle position,
when shifting the lever (3) to the opposite side., i.e downwards towards the
bedplate. After having loosened the screw (6) set correctly the stop (7) and
tighten anew the screw (6). After having set the left and the right position,
proceed to the mounting of the zigzag stitch mechanism guard.
3
2
4
1
Fig. 15
6
3
5 4
3
7
6
13
12 14
8
10
9
11
Fig. 16
12 15
2
12
1
Obr. 17