25
Adjusting the hook
CA
CA
UTION
UTION
Always turn off the power, unplug the machine and
then well-qualified technicians should adjust the hook.
Bring hook
1
to the extreme right end of its travel. Loosen
screw
2
.
Achieve a distance of 0.5mm (standard) from hook
1
to
retainer
3
(see A in the illustration on the right). After this
adjustment is made,
tighten screw
2
.
Check to see during test sewing if top cover thread
4
goes
under the hook when the hook moves to the left. If it does
not, loosen screw
2
and increase distance
A
.
After this adjustment is made, slightly press up hook
1
.
Tighten screw
2
.
Adjusting the carrier
CA
CA
UTION
UTION
Always turn off the power, unplug the machine and
then well-qualified technicians should adjust the carrier.
1.
There should be a distance of 1mm
C
from point
B
of
the carrier to the center of the first needle when carrier
5
comes closest to the first needle. Adjustment is
made by loosening screw
6
and moving carrier
5
.
After this adjustment is made, tighten screw
6
.
Check to see during test sewing if the top cover thread
is at the back of the first and second needles with the
carrier closest to the first needle.
If it is not, increase
C
(be careful that carrier 5 does not
contact the first needle).
If the top cover thread reaches the point of the third
needle at its back, decrease
C
.
2.
Check to make sure that hook
1
does not contact carri-
er
5
when they come closest to each other.
4
1
2
1
3
A : 0.5
mm
6
5
5
B
6
First needle
C : 1
mm
5
First
needle
The top cover
thread at the
back of the first
and second
needles
Second
needle
Third
needle
Fourth
needle
5
No contact
1
From the library of: Superior Sewing Machine & Supply LLC
Summary of Contents for FS700 Series
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