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; Basic Setting Of The Lever And The Roller Of The Decorative - Duerkopp Adler 525 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 done with the adjusting cam being mounted. 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 done with the adjusting cam being mounted. 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.

17. Basic setting of the lever and the roller of the decorative

stitch mechanism (Fig. 17, 18)
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 with the adjusting cam mounted. Remove the guard of the
decorative stitch mechanism. In turning the handwheel we shall set the needle bar
with the needle in its bottom position. Loosen the nut (1) on the screw (2), on which
the draw bar from the needle bar holder is mounted. Shift the screw (2) in the lever
groove (3) within the extent of extreme positions and observe whether the needle
moves in the needle groove of the throat plate. If so, remove the plug on the back
side of the arm. Loosen the screw (4) on the lever (5). Using a screwdriver, the
complete setting of the roller (6), (7) and (8) is to be done in such a way, so that
when repeating the turning of the roller and when shifting the screw (2) in the lever
groove (3) we shall find a position, in which the needle does not move in the needle
groove of the throat plate. Tighten then the screw (4). Mount the plug and tighten
the nut (1). Mount the guard at length.
3
2
1
4
Fig. 15
6
3
5 4
6
7
8
Fig. 16
2
1
3
Fig. 17
2
3
1
Fig. 18