18
104 73 15-26
8. 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 2.3 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:
413 10 22-01
Needle clamp
Ref No:
61-111600-02/000
Feeler gauge 2.3 mm
1. Set the machine so the needle is in its centre position against the #OA presserfoot.
2. Turn the hand wheel until the needle is at its lower turning position.
3. Put the spacer onto the needle bar and push it upwards
against the needle bar frame (C).
4. Take then the timing clamp and put it on the needle bar
and tighten its screw lightly.
5. Take the 2.3 mm feeler gauge and put its cutout on the
needle bar, above the clamp.
6. Loosen the clamp a little and push both feeler gauge and
clamp upwards against the spacer.
7. Tighten the screw on the timing clamp.
8. Remove the 2.3 mm feeler gauge.
9. Turn the hand wheel, in the sewing direction, until the
timing clamp stops against the spacer (A).
10. The tip of the hook should now be behind the centre line
of the needle.
Adjustment
1. Loosen up Screws (e,f,g) on the lower shaft (d).
2. Make sure that the feed dog is in its down stroke position.
3. Repeat checking points 1 to 9 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. Hold the hook in position with the left hand and tighten one of the screws (e,f,g).
6. Check.
7. Tighten all the screws (e,f,g).
This adjustment will affect the setting: Play between hook gear and lower shaft gear.
Settings
A
A
C
d
e
f
g
d