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Adjustment Procedures Results of Improper Adjustment
Adjustment Procedures Results of Improper Adjustment
2) Alternate momentum
1. Set the stitch dial to “0”.
2. Turn the handwheel to make sure that the amount of alternate
vertical movement of walking foot 1 and presser foot 2 is
almost equal.
3. When the amount is not equal, loosen setscrew 3 in the top
feed rear arm and adjust so that the amount should be equal.
Adjust the amount almost to A = B.
™ When the amount of alternate vertical movement of the walking
foot is larger than that of the presser foot :
1) Loosen setscrew 3 in the top feed rear arm in the state that
walking foot 1 is raised a little, press walking foot 1 to the
feed dog.
2) Re-tighten setscrew 3 in the top feed rear arm and turn the
handwheel to make sure of the amount of alternate vertical
movement of the walking foot and the presser foot.
Adjust the vertical stroke of the
walking foot so that it is larger than
that of the presser foot in accordance
with the sewing products.
™ Sewing sponge material or the
like
™ Sewing material with overlapped
sections
When the alternative vertical
strokes of the walking foot and
presser foot are considerably
different :
™ The stitch pitch is different from
the value set by the dial.
™ Decrease the number of revolution
of the motor a little since the feed
efficiency is decreased.
1. Loosen hinge screw 1 in the horizontal feed arm.
2. Move horizontal feed connecting rod 2 so that the distance
from the center of the horizontal feed shaft to that of the hinge
screw is 18 ± 0.5 mm and tighten the nut.
3. Turn the handwheel to check the needle sway.
(Standard) The engraved marker line on horizontal feed arm
3 aligns with the center of the hinge screw.
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