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Husqvarna Designer 1 Service Manual

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Page 31

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18. Feed dog height
Check
1. Bring the feed dog to its highest position.
2. The top of the feed dog should be 0.9-1.1 mm above the stitch plate.
Check with setting gauge 411 49 93-01
Adjustment
1. Bring the feed dog to its highest position.
2. Adjust with a screw driver the adjustment nut (A) until a correct
    feed dog height (0.9-1.1 mm) is obtained.
Settings 

Page 32

32104 72 47-26
19.Threading device
Check
1. Insert a new needle.
2. Bring the needle to its highest turning position.
3. The threader hook shall go smoothly into the needles eye.  See Fig 1 and Fig  2.
Adjustment
1. Loosen the the two screws (A) on the back of the threader head (B).
2. Move the thread head (B) so that the threader hook (D) does not touch
    the needle heightways (See fig 1)
3. Move the thread hook holder (C) so that the threader hook  (D) does not touch
    the needle sideways (See fig...

Page 33

              33 104 72 47-26
20.Stitch length balance basic setting
Check
Get into the service program.
Touch Feed-
,row 1, the feed dog shall now stand still when the foot control is
pressed (0-feeding).
Adjustment
1. Touch Feed-
,row 1.Loosen the screw (A) of the cog wheel and turn it until the feed
dog comes to a stand-still when the foot control is pressed.
2. Turn the hand wheel until the needle arrives at its 
lower turning position.
3.Touch Feed-
 , row 1.
4. The gap between the segment (B) and...

Page 34

34104 72 47-26
21. Pre-setting the step motor of the feed dog
Check 1
Set the needle in its lower turning position.
The feed dog should after turning the mains switch several times on and off
always reach such a position that 2.5 mm straight stitching will be obtained.
Check 2
Get into the service program.
Turn the hand wheel until the needle arrives at its 
lower turning position.
Touch  Feed- 
,row 1
The gap between the segment (A) and the calibration stop (B) should now
be Zero  (0 mm).
Adjustment...

Page 35

              35 104 72 47-26
22.Stitch length balance
Check
A Both columns of the buttonhole should be of the same density.
B The machine should sew a motif according to the symbol.
C The mending stitch should look according to the illustration.
(Use the mending stitch in the service menu - touch 
, row 5 )
Fine adjustment
Touch  
, row 5  in the service menu 1.
Turn screw (A) until the machine sews a mending stitch according to the illustration.
This adjustment may be done without dismounting the...

Page 36

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23. Lower thread tension (thread tension of the bobbin case)
Check
1. Insert a full bobbin into the bobbin case.
2. The thread tension spring of the bobbin case shall give a resistance
    of 12 - 20 g when pulling the thread slowly.
Adjustment
1. Turn screw (A) until the correct thread tension is obtained.
NOTE ! Before any adjustment is made remove any loose pieces of thread or fluff from
     the thread tension discs
Settings 

Page 37

              37 104 72 47-26
24.Upper thread tension - Normal position
Check
A correct take-up should be obtained on straight stitch and
zig-zag when the sewing advisor is set on woven medium.
Comment 1
The sewing advisor adjusts the thread tension according to the selection of fabric
and sewing technique.
This is done by means of the computer and the thread tension step motor.
Comment 2
The thread tension that is set in the set menu is to be regarded as a general indication.
This general indication can...

Page 38

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25.Upper thread tension - Embroidery position
Check
A correct take-up should be obtained on at embroidery stitch
(e.g.embroidery stitch No 1, menu 4 on Disk 100 Designer 1 Sampler).
Comment
The following embroidery threads shall be used:
Upper thread :Thread thickness No 40 ( e.g. Sulky No 40)
Lower thread: Thread thickness No 70 ( e.g. Sulky bobbin 100)
Adjustment
1. Get into the service program and select 
.
2. To adjust the tension on embroidery sewing - Embr
use
or .
3. Embr...

Page 39

              39 104 72 47-26
26. Upper thread guard sensor
Check
When the upper thread is finished or breaks the machine will stop.
This is done by means of a photo-diode (B) on the push button board
which reads the movement on the screen (C)  which moves
simultaneously with the thread take-up spring (D).
The machine must be threaded in order to activate
the upper thread guard sensor.
Upper thread guard sensor check.
Get in to service program.
Select Sensor -
 in order to check
The function of the upper...

Page 40

40104 72 47-26
27. Setting the thread take-up spring
Check
The thread take-up spring should have completed its movement when
the needle eye reaches the fabric.
The check has to be carried out in straight stitching in cotton.
Adjustment
1. Remove the thread tension cover by taking a firm grip on the top of the cover
and then carefully pulling it away from the front cover.
2.Turn the thread tension peg  (A) with a screw driver until a correct
thread take-up is obtained.
NOTE! The setting of the thread...
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