User manual LERVIA KH 4000

[. . . ] Storing 17 17 17 17 18 18 19 19 19 20 21 22 23 23 23 24 24 25 25 25 26 27 27 27 9. Disposal 30 31 31 Keep this manual for future reference and pass it on with the equipment to any future users. -3- Lervia KH 4000 Operating instructions Lervia Automatic Free-Arm Sewing Machine 1. - for use as a movable machine, - for sewing of typical household textiles and . . . - to be installed at a fixed location, - for processing of other materials (e. g. [. . . ] · Lower the needle retainer ; with the foot lever j. - 11 - Lervia KH 4000 d) Retrieving the lower thread · Turn the handwheel s in an anti-clockwise direction to fully raise the needle. · With the left hand, firmly hold the end of the upper thread that comes through the eye of the needle. · Then use your right hand to turn the handwheel s one full turn anti-clockwise. · The upper thread now pulls up the lower thread in a loop ". · As soon as the lower thread appears, pull carefully on the upper thread held in your left hand. The sewing machine is now ready to use. " e) Threading with 2 needles When you have inserted the twin needle as described in Chapter 9: · Pull out both thread spool carriers i on top and place two spools of thread there. · You can place a felt pad underneath the spool of thread, so that the bobbin runs evenly. · Run both upper threads exactly as they would be run for threading a single thread, . . . · except for threading at the needle: in this case, thread the two ends of the upper threads separately through the two needle eyes. · The lower thread is then threaded in exactly the same way and lifted upward, as for a single thread. - 12 - Lervia KH 4000 9. Attaching accessories Warning: Make sure that the sewing machine is switched off and the plug has been pulled out of the sokket to prevent accidents caused by un-intentional switching on. · Pull the material around the needle in the desired direction · then lower the needle retainer ; down. You can now continue sewing in the usual way in the new direction. - 18 - Lervia KH 4000 f) Selecting a stitch pattern y To select a particular pattern, take the following steps: · Select the stitch pattern with the stitch pattern selector h. · Select the stitch length by means of the d selector wheel. h · Select the stitch width by means of the selector wheel y. d · Attach the respective snap-on foot, as described in Chapter 9. If two values are set for the stitch length, these are understood as "from . . . A smaller size of stitch should be selected for sewing finer materials. h) Zigzag The zigzag stitch is universal. The zigzag stitch pattern consists of short stitches set closely after one another and is suitable for sewing initials, figures, appliqués etc. - 19 - Lervia KH 4000 i) Stitch pattern table Stitch pattern Stitch length Sewing foot Stitch width A Straight stitch 0 B-E Zigzag 1-5 F Blind stitch 3-5 G Blind hem 3-5 H Three-step zigzag stitch 3-5 I Slant over edge stitch 3-5 J Single overlock stitch 3-5 K Honeycomb stitch 3-5 L 3-fold zigzag 2-5 M Stretch straight stitch 0 N Shell stitch 3-5 O Honeycomb stitch 3-5 p 3-edged block stitch 3-5 q Semi-circular stitch 3-5 R-T Buttonhole 5 Free-hand embroidery Without 0-5 - 20 - Lervia KH 4000 j) Blind hem · Fold the material as shown. Make the fold as wide as you want the finished seam to be: The lower fold should be inset by about 5 mm. · Use the blind hem foot . While sewing, check the hem width and needle position to be sure the hem is even. · Sew the blind hem on the underside of the material, so that only the peak of the zigzag stitch pierces the top part of the material. When you have finished sewing, push the left of the material over to the right and smooth out. The table on the next page shows a suggestion for setting the various values depending on the material used. - 21 - Lervia KH 4000 k) Material-Thread-Needle Table Please refer to the details for the various materials. Material Thread Needle Presser foot pressure See p. 16 Stitch length Straight stitch ZZ Upper thread tension Stitch length selection Light Nylon Cotton jersey Silk Cotton 80 Man-made fibre 60 Silk 50 Man-made fibre 50 silk Cotton 60-80 Man-made fibre 60 Silk 50 Cotton 50 Man-made fibre 50 Silk 50 80 (12) 80-90 (12-14) 2 80 (12) 0. 5-3 0. 5-4 70 (10) 1 1-3 1-4 Woll-silk Middle Poplin Fine Jersey Gabardine Heavy Denim 90-100 (14-16) 80-90 (12-14) 80-90 (12-14) 3 0. 5-3 0. 5-4 Jersey Tweed - 22 - Lervia KH 4000 l) Seam guide · Use the seam guide for sewing longer hems or seams that should have an even distance to the edge of the material. [. . . ] b) Clean the feeder · Remove the needle and · Take the needle retainer ; off, as described in Chapter 9. Now remove the front cover q, if necessary, to better reach the screws. You can now clean the feeder. - 28 - Lervia KH 4000 c) Clean the casing Danger!: " Never open any parts of the machine casing other than those described in this manual. Otherwise there is a risk of injury and potentially life-threatening accidents. [. . . ]