T H E S I N G F__ R C O M P A N Y
Form (865) K6644 Printed in Great Britain
SINGER* Sewing Machine Model 337
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 • TRANSPARENT "DROP-IN " BOBBIN... located in front of the needle; shows thread supply at a glance.
3 PRINCIPAL PARTS STITCH SELE( PRESSURE OF MACHINE 337 WIDTH BOBBIN WINDER LEVER HAND WHEEL PRESSER FOOT BOBBIN WINDER SPINDLE NEEDLE THREAD TENSION REGULATOR STITCH H THREAD CUTTER L1GH'[ LEVER 3HT BOBBIN THROAT TENSION SLIDE PLA SWITCH WINDER BRACKET
4 'HOW TO WIND THE BOBBIN TO Remove the Bobbin-- Open slide plate and lift out bobbin.
5 To Wind the Bobbin STOP-MOTION • • Place spool of thread on spool pin. Thread through guide and between bobbin winder tension discs. • 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. SCREW • • • O Loosen stop-motion screw. BOBBIN .... '_'_,,_, WINDER ,,_,,,,._,,_,,_7,_-_-,,_,_%. LEVER !, .... i %.
6 To Replace the Bobbin / 0 Hold bobbin so that direction shown. thread leads off in Draw thread into notch at end of spring; pull about 3 inches of thread across bobbin. • • Place bobbin in case. Lead thread into slot and under • Close slide plate. spring.
7 HOW TO THREAD THE MACHINE Raise take-up Lead thread shown. lever to highest through point. threading points ._'_ ? i J i /:: '_:; ! • Thread needle from front to back. • Draw about 4 inches of thread eye of needle.
8 FABRIC, NEEDLE THREAD, THREAD SIZES FABRICS __ AND STITCH LENGTH NEEDLE SIZES CHART MACHINE STITCHES PER INCH STRAIGHT STITCHING m DELICATE---tulle, chiffon, organdy, fine tricot LIGHTWEIGHTBbatiste, voile, taffeta, silk crepe, fine lace, silk, Fine Mercerized 100 to 150 Cotton Synthetic Thread organdy, Jersey, plastic film 50 Mercerized 80 to 100 Cotton "A" silk Synthetic Th read II 50 Mercerized 60 to 80 Cotton "A" Silk Synthetic Thread 14 MEDIUM WEIGHTBgingham, percale, pique, linen
9 HOW TO INSERT This machine uses needle, Catalog 2020 (15 x 1). Sizes 9, 11, 14, 16 and 18. 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 turning hand wheel toward you. A NEEDLE NEEDLE BAR / NEEDLE by LONG • Loosen needle clamp screw.
10 STITCH CONTROLS REVERSE TO RELEASE Stitch Length Lever Numerals on either side of the lever represent number of stitches per inch. The higher the number, the shorter the stitch. The area above' 20 is used zig-zag satin stitch length. for adjusting To set stitch length Loosen thumb nut by turning it to the left. • TO TIGHTEN Move lever setting. Tighten right. to desired stitch thumb nut by turning To stitch in reverse Set stitch length as explained raise lever as far as it will go.
11 Stitch Width Selector 1234 T 0 i | I i[l STRAIGHT STITCH 0 SETTING ZIG-ZAG STITCH SETTINGS 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.
17. 0 Hold needle thread lightly Pull end of bobbin throat plate. with left hand.
13 PRESSURE ,_,t_:_'\_'g_\ ADJUSTMENTS _z_%_'_ O To decrease pressure, screw counterclockwise. O To increase pressure, turn thumb screw clockwise. i!i!i i!:ii. i Iti turn thumb '_,_,_' 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.
14 NEEDLE THREAD STRAIGHT TENSION, STITCHING _11__ - ~_.t_ Needle thread tension too tight--correct by setting dial to Needle thread tension too loose---correct by setting dial to lower number, higher number. A perfectly locked straight stitch results with upper and lower tensions so that needle and bobbin threads are drawn equally into fabric.
15 _ _:_ STRAIGHT STITCHING BOBBIN THREAD TENSION Bobbin thread tension too tight-correct by turning screw counterclockwise. __ _._L Bobbin thread tension too loose-correct by turning screw clockwise. A perfectly locked straight stitch results with upper and lower tensions balanced so that needle and bobbin threads are drawn equally into fabric.
16 STITCH LENGTH ADJUSTMENT FOR ZIG-ZAG SATIN STITCHING 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. 337 STITCH LENGTH LEVER IN SATIN STITCH AREA To Adjust Stitch Length for Satin Stitching. • Move stitch length lever above 20 to satin stitch area. • Run machine at slow speed. • Tighten indicator by turning thumb screw to the right, until stitches form a smooth surface.
17 NEEDLE THREAD TENSION ADJUSTMENT FOR ZIG-ZAG SATIN STITCHING 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. Furthermore, 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.
18 ZIG-ZAG LINGERIE APPLICATIONS SEAMS Dainty lingerie seams are made durable with zig-zag stitching. After straight stitching seam on wrong side, press both seam allowances in same direction. From right side, top-stitch with a fine zig-zag setting (1½ width), letting needle alternately enter seam line and seam thicknesses, l his finish is particularly suitable for bias seams. KNIT FABRIC SEAMS A narrow zig-zag stitch is ideal for seaming knit fabrics.
19 ZIG-ZAG APPLICATIONS SEAM FINISHES Seam edges support garment and should be given a durable finish where fabrics have a tendency to ravel. The zig-zag stitch is ideal for seam finishing. Place stitching near edge of seam allowance, and then trim excess fabric. DARTS IN INTERFACING Interfacing can be shaped without bulk with zig-zag stitching. Cut out dart allowance on stitching line and bring raw edges together. Pin over a muslin stay and stitch. Reinforce both ends with reverse stitching.
20 ZIG-ZAG APPLICATIONS MENDING Zig-zag stitching is well suited for all types of household mending. It provides a firm, flexible bond for repair of tears and is ideal for reinforcement and application of elastic. Stitch length and width are regulated according to need. Tears. Trim ragged edges and tear with underlay. Shorten stitch ends and corners for added strength. reinforce length at Application of Elastic. Elastic must be stretched as it is applied to insure fullness required in the garment.
21 ZIG-ZAG. APPLICATIONS APPLIQUE Motifs or designs, applied with a zig-zag stitch, add beauty and interest to •wearing appareland household textiles. Bands, flowers, leaves or figures in contrasting or self fabric, may be effectively applied to another surface by two methods. The appropriate method is determined by the fabric being used. A test sample is advisable. Method _ 1 Position and baste design to fabric. Outline entire design with a short straight stitch. Trim raw edges close to stitching.
22 STITCH LENGTH: BUTTONHOLES ABOVE 20 STITCH WIDTH: To establish exact stitch setting and buttonhole length a test sample to use the same fabric and number of fabric layers as in the garment. 2 AND is advisable. 4 Be sure 2 C ...... Procedure: Mark button length on garment. Allow 1/8" at each end for bar tacks. Side Stitching: Set stitch width at 2. Stitch down left side starting at point A and stopping at end of marking, point B. Leave needle in fabric.
23 BUTTONHOLES (Cont'd) A .T O E Final Bar Tack: With needle in fabric, raise presser foot and set stitch width at 4. Lower presser foot and duplicate tack previously made. Leave needle in fabric at point F. Fastening Stitch: With needle in fabric, raise presser foot and sgt stitch width at O, lower foot, take approximately three stitches_ Remove work, draw threads to wrong side and trim. Cut opening for button with a pair of sharp embroidery scissors.
24 DARNING With just a little practice you will be able to darn clothing and household linens effortlessly and quickly. I • Set Stitch Width Selector on O setting and adjust Stitch Length Lever for desired stitch length (usually about 10 or 12). 2. Decrease pressure by turning Pressure Regulator thumb screw to right. Pressure should be lighter than for normal sewing but not too light to prevent work from feeding smoothly. 3. If area to be darned underlay in place. is open, baste an 4.
25 FASHION* Available forseparate AIDS AND ATTACHMENTS purchase at your local SINGER CENTER Designed to cut down your sewing time, enlarge the scope of your accomplishment and produce "professional-looking" results, the following attachments are available for your use on the 337 Machine. THE AUTO-PILOT BUTTONHOLER... automatically produces straight and eyeletend worked buttonholes, embroidered eyelets, and perfectly aligned rectangles of straight stitching for bound buttonholes.
26 FASHION AIDS AND THE ZIPPER FOOT... the placement of stitching edge. For zipper insertions, slip cover welting. THE BINDER of commercial THE indispensable for close to a raised corded seams and FOOT... for the application and hand-made bias binding. HEMMER stitches pressing ATTACHMENTS FOOT... a perfect narrow or basting. forms 1/8" hem and without THE TUCKER... a time saver for making tucks 1/8" to 1 inch in width.. Gauges tuck width and tuck spacing; marks and stitches in one operation.
27 HOW TO TAKE CARE OF THE MACHINE To Clean the Machine When in regular use CLEAN AND Machine should be cleaned periodically with lint brush to remove lint and fluff which may have accumulated around workirig parts. To clean bobbin case area, removebobbin case as instructed on page 29. Oil machine after each cleaning as instructed on pages 30, 31 and 32. OIL CLEAN BETWEEN TENSION DISCS CLEAN -_.
28 To Remove and Replace Throat Plate To remove the throat plate CLAMPING To replace the throat plate PIN / / • $ • • / Raise needle bar and presser foot. Open slide plate. Place thumb under right front end of throat plate and raise until clamping pin lifts up. Draw plate toward right to disengage. • • • , H Position fork of plate under clamping pin as shown above. Push to left and press down until plate snaps into position. Close slide plate.
29 To Remove and Replace • Open slide plate and remove (see page 28). • Unlock bobbin case by lifting and pulling holder to right as shown. Remove bobbin case from machine. • • • throat Bobbin Case plate Remove all lint, fluff or other foreign matter which might clog machine. Replace bobbin case so that groove under tension spring fits on hook raceway and fork of case straddles positioning stud. Push bobbin case holder to left until it snaps down into lock position.
30 To Off the Machine To keep_your machine in top running condition, use SINGER Oil and SINGER* Lubricant. Both are quality products especially prepared for sewing machines, and should always be used in the care of your 337 machine. ' i1 ....:7:':: ............... _.......................... o ! • • • • Clean machine periodically as instructed on page 27. Apply a drop of oil to each place indicated. Remove screws A and lift off arm top cover.
31 / • • • Remove face plate (see page 27) and oil the places indicated. Open slide plate and apply a drop of oil to hook raceway as indicated. Close side plate, replace arm top cover and face plate.
32 To Oil the Machine (Cont'd) G Tilt machine back and remove thumb nut from screw G, being careful not to lose felt washer, and remove cover from underside of machine. Oil each of the places indicated by arrows. Avoid getting oil on any part of the motor. Replace bottom cover.
33 ELECTRICAL INFORMATION The SINGER* Electric Motor in your machine is furnished for operation on an alternating current of 110-120 volts, 25 to 75 cycles, or on 110-120 volts direct current. Special motors are available for direct or alternating current for any voltage between 50 and 145, and for 32 volts direct current. ARM END COVER Before inserting Electric Plug, be sure that voltage and cycles on arm end cover are within range marked on electrical meter installed by your power company.
34 Electrical Information (Cont'd) Sewing Light To Remove Bulb. Press bulb intosocket turn it in " unlock" direction, as shown, withdraw. and and To Replace Bulb. Press bulb into socket with bulb pin in slot and turn it in " lock" direction, as shown. LOCKS FINGER GRIP The built-in sewing light is located beneath the machine arm. It is turned on or off by the light switch located under the stitch length lever. To Change Bulb • • • Switch light off.
To all whom The improper it may concern: placing or renewal of the trademark any other of the trademarks Registered Trademarks) reconditioned, of The Singer Company on any machine or (all of which are duly that has been repaired, rebuilt, or altered in any way whatsoever or an authorized SINGER "S ! N G E R". agency is forbidden.
SINGER GUARANTEE WE GUARANTEE that each SINGER* sewing machine has been carefully manufactured and is in perfect operating condition on delivery. When subject to normal family use and care, any parts requiring replacement at any time due to defects in material or workmanship will be replaced without charge.
