Service manual

S100
1-21
Revised 10/2005
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D - MACHINE ADJUSTMENT
Adjustment of the main shaft brake
The main shaft brake equalizes the stitch density of the buttonhole seam for the left and right-hand
sides.
1. Loosen the locking nut  of the adjustment screw  in the main shaft brake .
2. Adjust the brake pressure to obtain equal stitch density between the stitches. Tighten the adjusting
screw . Rotating the adjusting screw clockwise, increases the brake pressure.
CAUTION! The main shaft brake is an auxiliary brake, used to obtain equalization of stitch density on
the left and right-hand sides. If the main shaft brake pressure is excessively high, the machine components
may malfunction. Adjust the lightest brake pressure as possible.
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Rear view
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