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1) Longitudinal adjustment of the rear needle guide
1. Loosen the setscrew and move the rear needle guide forward
or backward to adjust the height.
2. After adjustments, tighten the setscrew .
(Caution) When the rear needle holder is adjusted, recheck the
presence of a clearance between the respective needles
( , , and ) and the respective loopers ( , , and
). If any clearance is perceived, readjust the related
conditions.
2) Height adjustment of rear needle guide
1. Loosen the setscrew and move the rear needle guide base
vertically to adjust the height.
2. After adjustments, tighten the setscrew .
o If a clearance is actually
developed between the needles
, , and the rear needle
holder , this can be a cause of
needle breakage or stitch
skipping.
o When the rear needle holder
presses the respective needles
( , , and ) too much, this can
be a cause of needle tip being
blunt.
Adjustment Procedures Results of Improper Adjustment
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