Adjustment
29
13.05.10 Needle thread tension release
Requirement
When the tip of release lever 5 is at the highest point of release cam 4 the tension discs must
be at least 0.5 mm apart.
Lower the lifting presser onto the needle plate.
Set the needle bar at b.d.c. and operate solenoid core 1.
Turn the balance wheel (sewing direction) until the thread catcher is in its front position.
Adjust linkage rod 2 (screws 3) according to Requirement.
Turn the balance wheel to end the trimming action and set the take-up lever at t.d.c.
Check that the thread tension is fully active.
Finally, lightly grease the surfaces of release cam 4 and the tip of release lever 5.
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Fig. 13 - 24
2
3
1
5
4
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