–
28
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Standard Adjustment
Results of lmproper Adjustment
1. Loosen setscrew
4
in the rear needle guard holder and perform
the adjustment in the lateral direction.
2. Loosen setscrew
2
in the rear needle guard and perform adjustment
in the height direction and the direction of rotation.
3. After the adjustment, tighten setscrews
2
and
4
.
(Caution)
After the adjustment, check by manual turning whether
the top end of looper
3
does not come in contact with
the needle.
™
When the pressing amount of rear
needle guard
1
is small, needle
deflection increases and stitch
skipping, thread breakage, needle
breakage and worn-out of the top end
of looper
3
will be caused.
4
2
