15
To adjust the stitch length
The actual stitch length should be 3.0 to 3.2 mm (30 to 32 mm for 10 stitches) when the stitch length dial is set to “3”
and the differential feed dial to “1.0”.
To adjust:
NOTE:
Adjust the stitch length, after adjusting the feed dog
height and the differential feed (Refer to pages 13 and
14).
1. Set the stitch length dial to “3” and the differential feed
dial to “1.0”.
2. Open the looper cover and remove the belt cover.
3. Sew 11 stitches on a piece of paper and measure the
distance between the first stitch and eleventh stitch
(10-stitch length). If the distance is not 30 to 32 mm,
loosen the setscrew and adjust as follows.
⇨
If the stitch length is longer than 32 mm, turn the
stitch length adjusting pin to the direction where
the differential feed adjusting rod ascends.
⇨
If the stitch length is shorter than 30 mm, turn the
stitch length adjusting pin to the direction where
the differential feed adjusting rod descends.
4. Measure the distance for 10 stitches again. Adjust
until distance becomes 30 to 32 mm.
5. After adjustment, tighten the setscrew
6. Attach the belt cover and close the looper cover.
Stitch length adjusting pin
Setscrew
Stitch length adjusting rod
3.0 to 3.2 mm
30 to 32 mm
Right needle
Left needle
Maximum stitch length: 32 mm
Minimum stitch length: 30 mm
Mechanical Adjustment
MODEL: AirThread 2000D
