Bernina B 570 - BERNINA Dual Feed Balance

BERNINA International AG Seestrasse 161 CH-8266 Steckborn Schweiz Seite 146 von 172
DRAFT – VERSION
Difference in length
max. 7.0mm
j
BERNINA Dual Feed balance
Check:
• Synchronization of feed-dog and upper feed motion
(BERNINA Dual Feed BDF).
Difference in length between the repeats:
• Attach foot 1D.
• Thread machine and place two-layered sewing-off
cotton under the presser foot.
• Feed-dog in the up position (normal sewing).
• Engage Dual Feed.
• Select the diamond stitch pattern.
• Stitch the pattern (the machine will automatically stop after 6 repeats).
• Raise the presser foot and move the fabric ca. 1.0cm to the right.
• Make sure that the needle pierces at level with the end point of the last of the 6
diamond repeats.
• Lower the presser foot. Press the permanent reverse button on the screen.
• Stitch the pattern in reverse (the machine will automatically stop after 6 repeats).
• The difference in length between the two stitched rows should not be larger
than 7.0 mm.
Adjust:
• Check BDF rough-adjustment (see 5.6.6
)
WARNING! Danger of winder motor short-
circuiting!
• Fine-adjustment: The machine must be unpowered when carrying out this
adjustment (see 1.2
)
• Turning screw j clockwise will lengthen the left side of the diamond stitch pattern
while the right side of the diamond pattern will be shortened.
• Turning screw j counterclockwise will shorten the left side of the diamond stitch
pattern while the right side of the diamond pattern will be lengthened