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23
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Adjustment Procedures
Results of Improper Adjustment
1) Loosen screw
1
, and adjust the vertical position of the auxiliary
thread take-up lever. At this time, carefully position the auxiliary
thread take-up lever so that it is leveled or its left-hand side is
raised.
2) Loosen screws
2
, and adjust the longitudinal position of the
auxiliary thread take-up lever. Use a thicker one of the hexagon
wrench keys supplied with the machine as accessories. At this
time, adjust so that the auxiliary thread take-up lever is in
parallel to the needle rocking stroke and tighten the screws.
™
If the auxiliary thread take-up
lever is lowered from the correct
vertical position, the thread take-
up amount of the auxiliary
thread take-up lever will be
decreased and larger thread
loops will be produced.
™
On the contrary, if the auxiliary
thread take-up lever is raised,
the thread take-up amount of the
auxiliary thread take-up lever will
be increased and smaller thread
loops will be produced.
™
If the auxiliary thread take-up
lever is excessively raised from
the correct vertical position, the
auxiliary thread take-up lever will
come in contact with the needle
bar thread holder. So, be
careful.
™
If the longitudinal position of the
auxiliary thread take-up lever is
not proper or the auxiliary thread
take-up lever is not in parallel to
the needle rocking stroke,
thread breakage and stitch
skipping will be caused.
Auxiliary thread take-up
lever mounting bracket
Auxiliary thread
take-up lever base
1
2
