21
104 72 79-26
12.The timing of the hook in relation to the needle
Check
- Set a new needle size 90 universal into the machine.
- Remove the needle plate, bobbin case holder and the bobbin case.
- Set machine on straight stitching.
- As the needle is moving upwards, the tip of the hook should pass behind the centre of the needle, when
the needle is 2.5 mm above its lower turning position.
NOTE!
Before any adjustment is done check that the setting "4. Setting the hook in relation to the feeding
eccentric" is correct.
Check with setting gauge, Ref. No: 63-102600-18/000 Spacer, Ref. No: 61-111600-02/000 Feeler
gauge 2.5, Ref. No: 413 10 22-01 Needle clamp
1. Turn the hand wheel until the needle is at its lower turning position.
2. Put the spacer onto the needle bar and push it upwards against the needle bar frame (C).
3. Take then the timing clamp and put it on the needle bar and tighten its screw lightly.
4. Take the 2.5 mm feeler gauge and put its cutout on the needle bar, above the clamp.
5. Loosen the clamp a little and push both feeler gauge and clamp upwards against the spacer.
6. Tighten the screw on the timing clamp.
7. Remove the 2.5 mm feeler gauge.
8. Turn the hand wheel, in the sewing direction, until the timing clamp stops against the spacer.
9. The tip of the hook should now be behind the centre line of the needle.
Adjustment
1. Remove the blank pointed screw (B) and loosen the other 2 screws in the belt wheel of the arm shaft.
2. Make sure that the feed dog is in its down stroke position.
3. Repeat checking points 1 to 8 with the setting gauges.
4. Hold the arm shaft and turn the hook until its tip arrives behind
the centre line of the needle.
5. Tighten one of the black screws.
6. Make sure the screw descends into the groove of the shaft so that
the belt wheel is placed correctly sideways.
7. Check.
8. Tighten all the screws.
NOTE! Change the position of the Arrowed silver screw and
the second black screw.
Settings
B
A
A
C
