23
0.05
- 0
.1
mm
2
3
Adjusting the looper
CA
CA
UTION
UTION
Always turn off the power, unplug the machine and then well-
qualified technicians should adjust the looper.
1.
Adjusting the looper-needle setting distance
Adjust looper-needle setting distance
A
from the center of the
right needle to the point of looper
1
when the looper is at its
farthest position to the right. Select the distance according to
the machine being used by referring to the table of adjustment
dimensions (see page 32).
Adjustment is made by loosening screw
3
on looper holder
2
and moving looper holder
2
to the left or right.
After the adjustment, tighten screw
3
.
2.
Adjusting the looper avoiding distance
When the point of the looper has reached the center of the left
needle from the extreme right end of its travel, there should be
0.05~0.1mm front-to-back clearance between the left needle
and the point of the looper.
●
For 3-needle machines
When the point of the looper has reached the center of the
middle needle from the extreme right end of its travel, there
should be 0-0.
0
5mm front-to-back clearance between the
middle needle and the point of the looper.
Adjustment is made by loosening screw
3
on looper holder
2
and moving looper holder
2
forward or backward.
After the adjustment, tighten screw
3
.
●
When the point of the looper is passing the center of the
right needle from the extreme right end of its travel (the
rear needle guard is not effective), the right needle slightly
contacts the point of the looper.
1
A
Summary of Contents for W1500 series
Page 2: ......
Page 16: ...13 For more stretchable thread 4 Threading diagram...
Page 37: ...34...
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