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8. THREAD TENSION
8-3. Adjusting the presser foot floating amount (minute lifting amount)
Raise
8-4. Adjusting the trailing length after thread trimming (Models with thread
trimmer only)
Longer
Shorter
2926M
37
3096M
• When sewing stretch materials and materials with long
• In addition, this can be useful for increasing ease of
1. Turn the sewing machine pulley by hand to move the feed
2. Use the lifting lever to lower the presser foot (1).
3. Loosen the nut (4).
4. Use a hexagon wrench to turn the adjusting screw (5) to
Floating amount
5. Tighten the nut (4).
* After making the adjustment, sew a piece of material to
< Guide to adjustment when sewing curves >
When the material is placed under the presser foot (1) and
Lower
the feed dog (2) is moved to its lowest position and the
material is moved, there should ideally be some resistance
in the material.
If the floating amount is too small
• Ease of working (handling) will be poorer when sewing
If the floating amount is too large
• The stitch lengths and seam lines will be unstable.
3097M
y At the time of thread trimming, the thread tension is
y The standard trailing length for the upper thread is 33–37
y If the tension of the pretension (1) is increased, the
Adjust by turning the pretension (1).
Trailing thread
2927M
T-8421B, 8422B, 8452B, 8722B, 8752B
pile, you can make minute adjustments to the floating
amount for the presser foot (1) in accordance with the
material.
working when sewing curves.
dog (2) below the needle plate (3).
adjust the floating amount.
• To raise the presser foot (1) ...
Turn the adjusting screw (5) clockwise.
• To lower the presser foot (1) ...
Turn the adjusting screw (5) counterclockwise.
check the floating amount.
curves.
loosened and tension is applied by the pretension (1) only.
mm.
lengths of the threads trailing from the needle tips will be
reduced; if the tension is reduced, the lengths will be
increased.
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