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T H E S I N G F__ R C O M P A N Y
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Form K6644 Printed in Great Britain (865)
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SINGER* Sewing Machine Model 337
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2 CONGRATULATIONS ! As the Owner of_a SING[R*337 Sewing Machine... you have a dependable, smooth running zig-zag sewing machine that is outstanding in its simplicity of operation. You can overcast a seam, make a buttonhole or stitch a decorative applique. Then, switch instantly to straight stitching for seaming, machine basting, or darning. You will find these features especially helpful • THROAT PLATE... clamp type for easy removal; calibrated for control of seam • TRANSPARENT "DROP-IN " BOB- w
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3 PRINCIPAL PARTS OF MACHINE 337 STITCH WIDTH SELE( PRESSURE BOBBIN WINDER LEVER HAND WHEEL PRESSER FOOT BOBBIN WINDER SPINDLE NEEDLE THREAD TENSION REGULATOR STITCH H L1GH'[ LEVER THREAD CUTTER 3HT SWITCH BOBBIN WINDER THROAT TENSION BRACKET SLIDE PLA
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4 'HOW TO WIND THE BOBBIN TO Remove the Bobbin-- Open slide plate and lift out bobbin.
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5 To Wind the Bobbin • Place spool of thread on spool pin. • Thread through guide and between STOP-MOTION bobbin winder tension discs. SCREW • Lead end of thread through hole in bobbin and place bobbin on spindle. • Move bobbin winder lever to the right. • Hold end of thread and start machine. • Cut off thread end after a few coils have been wound on bobbin. O Loosen stop-motion screw. .... '_'_,,_, ,,_,,,,._,,_,,_7,_-_-,,_,_%. BOBBIN WINDER LEVER 1 _¢_ When bobbin is full, stop machine. Cut con
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6 To Replace the Bobbin / Hold bobbin so that thread leads off in 0 • Place bobbin in case. direction shown. • Lead thread into slot and under spring. Draw thread into notch at end of spring; pull about 3 inches of thread across bobbin. • Close slide plate.
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7 HOW TO THREAD THE MACHINE Raise take-up lever to highest point. Lead thread through threading points shown. ._'_ ? i J i /:: '_:; ! • Thread needle from front to back. • Draw about 4 inches of thread through eye of needle.
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8 AND STITCH LENGTH CHART NEEDLE FABRIC, THREAD, MACHINE STITCHES PER INCH THREAD NEEDLE FABRICS SIZES SIZES STRAIGHT STITCHING __ m Fine Mercerized DELICATE---tulle, chiffon, fine lace, silk, 100 to 150 Cotton 9 15 to 20 organdy, fine tricot Synthetic Thread 50 Mercerized 12 to 15 80 to 100 Cotton LIGHTWEIGHTBbatiste, organdy, Jersey, II "A" silk (8 to 10 for plastic) voile, taffeta, silk crepe, plastic film Synthetic Th read 50 Mercerized 60 to 80 Cotton MEDIUM WEIGHTBgingham, percale, pique,
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9 HOW TO INSERT A NEEDLE This machine uses needle, Catalog 2020 (15 x 1). Sizes 9, 11, 14, 16 NEEDLE BAR and 18. NEEDLE CLAMP For perfect stitching, select correct needle / and thread to correspond with fabric according to table on page 8. Be sure to use like threads for both needle and bobbin. • Raise needle bar to highest point by turning hand wheel toward you. LONG GROOYE • Loosen needle clamp screw. TOWARD YO U Insert needle upward into clamp as far as it will go, with fiat side of needle to
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10 STITCH CONTROLS Stitch Length Lever REVERSE Numerals on either side of the lever represent number of stitches per inch. The TO RELEASE higher the number, the shorter the stitch. The area above' 20 is used for adjusting zig-zag satin stitch length. To set stitch length Loosen thumb nut by turning it to the left. • Move lever to desired stitch length setting. TO TIGHTEN Tighten thumb nut by turning it tO the right. To stitch in reverse Set stitch length as explained above, and raise lever as fa
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11 Stitch Width Selector 1234 T 0 i | I i [ l STRAIGHT STITCH SETTING ZIG-ZAG STITCH SETTINGS 0 1 to4 The stitch width selector regula[es the swing of the needle from a straight position 0 to a maximum zig-zag width 4 (5/32 inch). To position, slide selector to desired setting. As the lever is moved to the right the width of the zig-zag stitch is increased. Settings of I thru 4 are indicated but intermediate settings may also be used. To avoid damage to needle and fabric, do notmake any selector
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17. 0 Hold needle thread lightly with left hand. through thread up Pull end of bobbin throat plate.
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13 PRESSURE ADJUSTMENTS ,_,t_:_'\_'g_\ _z_%_'_ O To decrease pressure, turn thumb screw counterclockwise. i!i!i O To increase pressure, turn thumb i!:ii. i Iti screw clockwise. '_,_,_' DECREASE INCREASE Smooth, even handling of several thicknesses of fabric results when pressure is correctly regulated. Surface finish, as well as the weight and texture of the fabric, must be considered in determining the amount of pressure needed. Adjustment of the thumb screw regulates the amount of pressure exe
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14 NEEDLE THREAD TENSION, STRAIGHT STITCHING _11__ - ~_.t_ Needle thread tension too Needle thread tension too tight--correct by setting dial to loose---correct by setting dial to lower number, higher number. A perfectly locked straight stitch results with upper and lower tensions balanced so that needle and bobbin threads are drawn equally into fabric.
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15 STRAIGHT STITCHING _ _:_ BOBBIN THREAD TENSION __ _._L Bobbin thread tension too loose-- Bobbin thread tension too tight-- correct by turning screw counterclock- correct by turning screw clockwise. wise. A perfectly locked straight stitch results with upper and lower tensions balanced so that needle and bobbin threads are drawn equally into fabric.
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16 FOR ZIG-ZAG SATIN STITCHING LENGTH ADJUSTMENT STITCH SATIN STITCH AREA 8 Satin stitching, a series of closely spaced zig-zag stitches that form a smooth satin-like surface, is useful for both utility and decorative stitching. To Adjust Stitch Length for Satin Stitching. 337 • Move stitch length lever above 20 to satin stitch area. • Run machine at slow speed. • Tighten indicator by turning thumb screw to the right, STITCH LENGTH LEVER until stitches form a smooth surface. IN SATIN STITCH AREA
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17 ADJUSTMENT FOR ZIG-ZAG SATIN STITCHING NEEDLE THREAD TENSION Zig-zag stitching requires less needle thread tension than straight stitching; and closely spaced zig-zag stitches that form a smooth satin-like surface require less tension than widely spaced, _pen zig-zag stitches. Further- more, the wider the satin stitching, the lighter the tension required. To determine correct tension setting, a test sample should be made on a scrap of the fabric to be used. A properly balanced satin stitch sh
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18 ZIG-ZAG APPLICATIONS LINGERIE SEAMS KNIT FABRIC SEAMS Dainty lingerie seams are made durable A narrow zig-zag stitch is ideal for seaming with zig-zag stitching. After straight stitching knit fabrics. It is particularly suitable for seam on wrong side, press both seam allow- underarm seams, or other seams where ances in same direction. From right side, elasticity and give are needed. top-stitch with a fine zig-zag setting (1½ width), letting needle alternately enter seam For curved or bias se
