Pfaff 1540 - Manual (Page 44)

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20. Adjustment of the feed reversing bar
Requirement:
At straight stitch or stretch stitch setting there must be a clearance of 0.2 mm between reversing bar 54
and the end of the lever of feeler 91 (fig. 39).
Check:
z Set the adjustment dial for the automatic unit to "E".
z Move the stitch length adjustment dial to the stretch symbol, up to the stop.
z Rotate the handwheel until adjusting crank 39 is positioned fully to the front (fig. 40).
z Move feed reversing bar 54 up and down a little and, at the same time check the 0.2 mm clearance
between reversing bar 54 and the end of the lever of feeler 91 (fig. 39).
Adjustment:
z Loosen screw 73 (fig. 41).
z First turn setting eccentric 74 downwards to its basic position.
z Turn the setting eccentric slightly in a clockwise direction until reversing bar 54 is touching feeler 91.
z Turn the setting eccentric back again until a clearance of 0.2 mm is set.
z Tighten screw 73.
Cross-check:
z Move feed reversing bar 54 gently up and down and check the clearance of 0.2 mm.
z Activate the reverse button at the largest stitch length setting and check the clearance between the
feed reversing bar and the feeler.