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2) LOOPER THREAD TENSION MODIFICATION
Check the OFF-status condition of a power switch before setting up.
Warning
(1) Looper threads take-up lever guide standard position
Align the right end of the looper thread take-up guide
ⓐ
with
the right end of the guide support plate
ⓑ
. (Refer to the
Figure 46)
(2) Looper threads take-up lever timing modification
The timing setting standard of the looper thread take-up is to
set the looper thread
ⓒ
through the point A when the needle
bar goes down 2.8mm from the highest point.
Loosen the looper thread take-up clamp screw
ⓓ
and adjust
like above then fix it by tightening the clamp screw.
(Refer to the Figure 47)
[ Figure 46 ]
TIP) Make the timing of the looper thread take-up lever faster to increase the amount of the looper thread take-up lever, make the timing slower to
decrease the amount of the looper thread take-up lever.
1. When setting the timing of the looper thread take-up lever over the adjustment range, it
causes the skipped stitches.
2. Adjust the thread take-up lever back and forth not to approach to the guide support plateⓐ and ⓑ
when adjusting the timing of the looper thread take-up lever or the upper thread take-up lever.
Caution
(3) Looper threads take-up lever eyelet standard position
Set the looper thread take-up lever eyelet
ⓕ
,
ⓖ
at the very right position. This is the standard.
TIP) Move the eyeletⓕ,ⓖ toward the left if you want to increase the amount of the looper thread take-up lever and otherwise move them toward
the right then fix the screwⓔ.
[ Figure 47 ]
ⓐ
ⓑ
ⓕ
ⓖ
ⓔ
ⓐ
ⓑ
ⓓ
ⓒ
A
ⓒ
2.8mm