User manual BROTHER 2340CV BROCHURE

[. . . ] Switch the sewing machine to the symbol "O" position when making any adjustments in the needle area, such as threading needle, changing needle, or changing presser foot, and the like. Always unplug the sewing machine from the electrical outlet when removing covers, lubricating, or when making any other user servicing adjustments mentioned in the instruction manual. This sewing machine is not intended for use by young children or infirm persons without supervision. Young children should be supervised to ensure that they do not play with this sewing machine. [. . . ] When set at 1, the feed dogs are moving at the same speed (ratio of 1). 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. 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. (1) Locate the differential feed adjustment lever on the left side of the machine. 0 Main feed (rear) Differential feed (front) Effect Material is pulled tight. Application Prevents thin materials from puckering Normal sewing Prevents stretch materials from stretching or puckering When stretch material is sewn without using the differential feed, the material will be wavy. CAUTION When sewing thick non-stretchable material such as denim, do not use the differential feed as it may damage the fabric. The pressure of the presser foot can be adjusted by Turning the pressure adjustment screw at the top left of this machine. Since this machine has already been adjusted to a pressure suitable for light to medium fabrics, no further adjustment is necessary except when sewing on very heavy or very light materials. Usually, when sewing on very light materials, the presser foot pressure should be loosened. When sewing very heavy materials, the presser foot pressure should be tightened. 1 Pressure adjustment screw 2 Less pressure 3 More pressure 4 Pressure adjustment screw 5 (Standard height for medium material) This machine uses a standard home sewing machine needle. (2) Turn the hand wheel counter-clockwise by hand until the needle is at its highest position. (2) Turn the hand wheel until the needle bar is at its highest position. (3) Hold the needle with its flat side away from you and insert it up as far as it will go. NOTE: When front needles are inserted correctly you can see the top of the needle in the window (5) above each needle position. CAUTION Always be sure to turn off the power before carrying out this operation. CAUTION Do not drop the needle and needle set screw in the machine, otherwise it may be damaged. 5 Flat surface 6 Place the needle on its flat side and check to see if the space is parallel. It can reduce the occurrence of material breakage by using SCHIMETZ 130/705H SUK (90/#14) BALL POINT. Make sure that the thread holders are in alignment above the spool pins as illustrated left. [. . . ] (6) After sewing is finished, refer to "Removing the fabric from the machine" in "V. 1 Fabric (surface) 2 Mark drawn with fabric marker 3 Left needle (just barely on the left side of the mark) 4 Right needle 5 Fabric 6 Needle (1) Raise the presser foot, insert the fabric as shown in the illustration, lower the presser foot, and then begin sewing. (1) (2) Finish sewing by overlapping about 4 cm (1-1/2 inch) of the beginning and end of the stitching. NOTE: When sewing tubular garments, overlapping the beginning and end of the stitching by about 4 cm (1-1/2 inch) will prevent the seam from tearing. [. . . ]