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Adjustment Procedures
Results of Improper Adjustment
1. Remove the face cover and loosen the needle bar connecting bracket
setscrew
to adjust the needle bar height by the means of the needle
bar height gauge
or
.
(Caution) When checking the needle bar height, change the needles
and
, enter the needles
and
in the needle
clamps
and
to their uppermost ends, and stop them
in the correct positions. The needle shank has a flat sec-
tion. Stop the needle with the flat section positioned in
front.
2. After the adjustment of the needle bar height, adjustment of the needle
array is carried out subsequently. Temporarily fasten the setscrew
of the needle bar connecting bracket
.
(Caution) 1. When the needle bar connecting bracket setscrew
is fastened temporarily, the needle bar is required not
to come down even when it is rotated.
2. If the needle bar height is changed for a certain rea-
son, readjustment is needed from the beginning, us-
ing the needle bar height gauge
or
.
When the needle bar height is
greatly different
o This will be a cause of stitch skip-
ping, needle breakage, or thread
breakage.
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
