Stitch Length Adjustment - Brother b831 Service Manual

ID STITCH LENGTH ADJUSTMENT
1. Forward feed adjustment
(1) Set the feed regulator dial O to the maximum position.
(2) Sew.
(3) Measure the stitch length.
To Increase stitch length
(1) Loosen screw O- and turn the feed regulator dial O counterclockwise.
(2) Tighten screw O. and turn the feed regulator dial O clockwise.
To decrease stitch length
(1) Turn the feed regulator dial O all the way counterclockwise.
(2) Loosen screw O. and turn the feed regulator dial O clockwise.
(3) Tighten screw O-
2. Reverse feed sewing
★ Reverse feed stitch length is determined by the fonward feed stitch length.
3. Aligning forward/reverse feed stitch lengths
(1) Adjust the forward feed stitch length.
(2) Sew. Stop the machine with the needle below the top of the needle plate.
(3) Drop the reverse lever O (reverse feed switch) all the way down to sew in reverse.
(4) Adjust the reverse feed stitch length by adjusting the position of the stopper O on the reverse lever O. Reverse feed
stitch length will decrease as the stopper O is raised.
• Readjust the stopper O position when the forward feed stitch length is changed.
- 3 5 -