Brother International 2340CV Users Manual - English and Spanish - Page 7

ENGLISH Stitch length To change the stitch length, (1) Locate the stitch length adjustment dial on the left side of the machine. (2) Turn the stitch length adjustment dial forward to lengthen the stitch to a maximum of 4 mm (5/32 inch). Turn the stitch length adjustment dial backwards to shorten the stitch length to a minimum of 2 mm (5/64 inch). (3) The normal stitch length setting is 3 mm to 4 mm (1/8 to 5/32 inch) Instructions for the differential feed mechanism This machine is equipped with two sets of feed dogs under the presser foot to move the fabric through the machine. The differential feed controls the movement of (4) both the front and the rear feed dogs. When set at 1, the feed dogs are moving at the same speed (ratio of 1). (3) When the differential feed ratio is set at less than 1, the front feed dogs move slower than the rear feed dogs, stretching the fabric as it is sewn. This is effective on lightweight fabric that may pucker. When the differential feed ratio is set at greater than 1, the front feed dogs move faster than the back feed dogs, gathering the fabric as it is sewn. This function assists in removing the rippling when serging stretch fabrics. • To adjust the differential feed. (1) Locate the differential feed adjustment lever on the left side of the machine. (2) The normal setting is 1.0 on the differential feed adjustment lever. (3) To set less than 1.0, move the lever back. (4) To set greater than 1.0, move the lever forward. Feed ratio 0.7 - 1.0 1.0 1.0 - 2.0 Main feed (rear) Differential feed (front) Effect Material is pulled tight. Application Prevents thin materials from puckering Without differential feed. Material is gathered or pushed together. Normal sewing Prevents stretch materials from stretching or puckering 5