−6 −
Adjustment Procedures Results of Improper Adjustment
1. Set the stitch dial to “0” mm.
2. Turn the handwheel to bring the needle bar to the lower dead
point of its stroke.
3. Loosen the setscrew in the feed rocker as shown in Fig. 5.
4. Move the feed bar to adjust so that needle ① enters the center
of the needle hole of feed dog ② , and securely tighten the
setscrew.
1. Set the stitch dial to “0” mm.
2. Turn the handwheel to bring the height of the feed dog at its
maximum. (Set the needle bar to the lower dead point of its
stroke.)
3. Loosen setscrew ① in the feed bar fork and move feed bar
fork ② up or down to adjust feed dog ③ to the dimension A
from top surface ④ (central section) of the throat plate, and
securely tighten the setscrew.
• Stitch skipping or thread breakage
will result.
• Loose stitches will result.
• Needle breakage will result.
◯ When the height of the feed dog is
excessively high :
• Stitch length becomes larger than
the graduation of the stitch dial.
• Balloon stitches will result.
• Phenomenon of the return of the
sewing product will occur.
◯ When the height of the feed dog is
excessively low :
• Stitch length becomes smaller than
the graduation of the stitch dial.
• Feed force will be deteriorated.
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