Pfaff EXPRESSION 2014, Service Manual, Page: 54 / 112

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21. Adjustment of equal forward and reverse stitch length for Pfaff expression 2034 / 2044
(for all forward and reverse controlled stitch patterns)
Requirement:
Letters B, D, G, H sewn in succession must measure 34.5 +/- 0.5 mm and must not be distorted (fig. 62).
To this end the machine must be at operating temperature, i.e. switch-on time 10 - 15 minutes.
Check:
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Switch off the machine.
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Turn on the machine by pressing key "0" and the master switch simultaneously.
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The display shows adjusting program "95".
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Place a piece of fabric under fancy stitch foot "2".
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Sew adjusting program "95" (fig. 59).
Preliminary adjustment:
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If a rhombus was sewn as seen in fig. 60, turn adjusting eccentric just 2 - 4 degrees in direction "A"
as shown in fig. 64.
If a rhombus was sewn as seen in fig. 61, turn adjusting eccentric just 2 - 4 degrees in direction "B",
as shown in fig. 64.
Cross-check:
●
Sew adjusting program "95" and check.
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On model 2034, select adjusting program "96" (BDGH) by pressing the program selection key (fig. 65).
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On model 2044, select adjusting program "96" (BDGH) by turning the program selection key (fig 66).
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By sewing, check the length 34.5 +/- 0.5 mm.
Precise adjustment:
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If the letters are distorted and longer than 35 mm, turn the adjusting eccentric with a screwdriver only
one degree in direction "B" according to fig 64.
If the letters are distorted and shorter than 34 mm, turn the adjusting eccentric with a screwdriver only
one degree in direction "A" according to fig. 64.
Cross-check:
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Select stitch program "09" (linen buttonhole).
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Place a piece of fabric underneath buttonhole foot "5".
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Sew stitch program "09".
The buttonhole bartack must cover the right buttonhole seam (fig. 63).