Adjusting The Presser Foot Pressure; Adjusting The Trailing Length After Thread Trimming - Brother S-7220B Instruction Manual
Single needle direct drive needle feed lock stitcher with thread trimmer
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Also See for S-7220B:
- Manual de instrucciones (74 pages) ,
- Instruction manual (72 pages) ,
- Basic operation manual (28 pages)
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10-2. Adjusting the presser foot pressure
Correct stitches
Becomes weaker
10-3. Adjusting the trailing length after thread trimming
3676M
Upper thread
0894M
Skipped stitches occur
0895M
Uneven stitch length
0896M
Stitches are puckered
0897M
Becomes stronger
3674M
3749M
Shorter
Longer
The presser foot pressure should be as weak as possible,
but strong enough so that the material does not slip.
1. Loosen the adjusting nut (1).
2. Turn the presser adjusting screw (2) to adjust the presser
foot pressure.
3. Tighten the adjusting nut (1).
At the time of thread trimming, the thread tension is
loosened and tension is applied by the pretension (1) only.
The standard trailing length for the upper thread is 35-40
mm.
If the tension of the pretension (1) is increased, the
lengths of the threads trailing from the needle tips will be
reduced; if the tension is reduced, the lengths will be
increased.
Adjust by turning the pretension (1).
S-7220B
10. THREAD TENSION
Increase the pressure.
Decrease the pressure.
38
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