User manual SINGER 143W3

[. . . ] Unplug the appliance before carrying out maintenance or replacing lamps. Switch the sewing machine off ("O") when making any adjustments in the needle area, such as threading needle, changing needle, threading bobbin, or changing presser foot, etc. Always unplug sewing machine from the electrical outlet when removing covers, lubricating, or when making any other user servicing adjustments mentioned in the instruction manual. Never operate on a soft surface such as a bed or couch where the air openings may be blocked. [. . . ] (3) With the flat side away from you, insert the new two needles together into the groove of needle bar as far as it will go. Use "HA1SP (705/130)" #11(80) or #14(90) or ones the same as for homeuse sewing machine. Threading When threading the machine from the beginning, threading must be carried out in the following sequence: First: Lower looper threading (A) Second :Upper looper threading (B) Finally: Needle threading (C, D) Push the front cover to the right, and fold it down towards you. Take the thread drawn from the spool and pass it, through guide of the thread stand and then, in order, through guides , , and thread tension dial . Bring the lower looper to the far left position by turning handwheel towards you, and pass the thread 11 through lower looper thread guide . Then, move the lower looper slightly to the right by turning the handwheel towards you. Bring the upper looper to its lowest position by turning handwheel toward you. ⷠDraw thread from spool and pass it, through guide of the thread stand and then, in order, through guides ~ (Fig. For ease in threading, push the upper knife holder screw from A side with the forefinger of your left hand and grasp the right end of the holder © and turn it in the direction of arrow B with your right hand. Take the thread drawn from spool, and pass it through thread guide ~ , then thread to the right-hand needle's eye from front to back. Take the thread drawn from spool, and pass it through thread guides ~ , ~ , and thread the left-hand needle's eye from front to back. Adjustment is necessary only when you work on very thin or very thick materials. Accordingly, sew thinner materials with less pressure and thicker materials with more pressure. Increase the pressure of the presser foot by tightening the adjustment screw. Balance of the Loopwer thread: When the lower looper thread is pulled to the top of material, loosen tension dial counterclockwise. Lower looper thread and upper thread should be well balanced with same tension. Unbalancedleftneedlethreadtooloose Tighten the thread tension of the left needle ( Dial ) or loosen both looper thread ( Dial and ). Adjustments For The Differential Feed Differential feeding performs the function of stretching or condensing the edge of the fabric, since two independent feed dogs, one in front and one behind the needles, can be adjusted to feed at different ratio. Refer to the below chart and test stitch performance on a scrap of material you are going to use. (1) If the cutting width is narrower than the bight size, turn the bite width adjusting dial to the direction of arrow. (To bigger number) (2) If the cutting width is wider than the bight size, turn the bite width adjusting dial to the direction of the arrow. The right figure shows that the size of the bite between the left needle and the edge of the material 5 mm. [. . . ] The fabric is rolled and overlocked with upper and lower looper thread. The figures in the above chart may be a little different according to the kind of the fabric and the threads. For roll hem sewing, pull the material gently towards the rear of the machine, and you'll get neater stitches. Use the presser foot marked "A" and needle plate "A". [. . . ]