Adjustment
——————————
●
Adjust bobbin thread clamp spring
1
(screw
2
) in accordance with
Requirement 1
.
●
Adjust the tension in accordance with
Requirement
2
by bending side
4
of the bobbin thread
clamp spring
1
.
:
Control – requirement
1
●
Switch off the machine and bring the take-up lever to its bottom dead centre.
●
Engage and disengage the thread cather
3
by hand and check
Requirement 1
. Adjust if
necessary.
Control – requirement 2
●
After the thread has been cut, sew a few stitches by turning the balance wheel, checking
whether the bobbin thread is drawn out of the bobbin thread clamp spring between the 1
st
and 3
rd
stitched, if necessary, correct the tension.
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