Singer 331K4 Service Manual Download Page 1 | Manualshive

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Summary of Contents for 331K4

Page 1: ...MANUAL A Trademark of THE SINGER COMPANY 331Kl and 331K4 THE SINCER COMPANY 1962 by The Singer Company Copyright Under International Copyright Union All Rights Reserved under Inter American Copyright...

Page 2: ...ulley 3 11 Needles 5 Needle Bar 3 12 13 Needle Setting 5 Needle to Shuttle Clearance 13 16 Perfect Stitch 8 Preparation for Sewing 8 Presser Bar 12 Presser Bar Guide Bracket 12 Presser Foot 3 12 15 Pr...

Page 3: ...on order Knee lifter 139625 regularly supplied 3 MACHINE 331K4 Similar to Machine 331 K1 with the following exceptions Spring biased quick reversible feed mechanism permits operator to feed work backw...

Page 4: ...points on the machine Arrows indicate oiling points in Figs 2 through 5 Never attempt to oil shuttle race See Fig S through holes in throat plate REMOVE SCREW AND REMOVE FACE PLATE 4 BOBBIN WINDER LU...

Page 5: ...needle should slip down the thread easily Needles for this machine are of Catalog 2055 16 x 87 in Sizes 8 to 14 16 to 19 and 21 to 25 Orders for needles must specify the Quantity required the Size num...

Page 6: ...from left to right through needle eye Draw about two inches of thread through the eye of the needle with which to start sewing TO REMOVE THE BOBBIN Turn machine pulley over toward you until needle thr...

Page 7: ...short of bobbin rim TO THREAD THE BOBBIN CASE Hold the bobbin so that the thread will unwind in the direction shown in Fig 12 Hold the bobbin case as shown in Fig 12 and place the bobbin into it Pull...

Page 8: ...presser foot Turn material for next line of stitching using needle as a pivot Lower the presser foot Resume sewing Avoid aiding the machine by pulling the fabric lest you damage the needle The machin...

Page 9: ...utomatically released when presser foot is raised Tension on needle thread should be just enough to set stitch correctly in mate ial Having lowered presser foot turn thumb nut at the front of tension...

Page 10: ...itch as instructed in Fig 24 Thumb screw is marked with numerals from O to 5 When thumb screw is set at O feed reversing lever is fixed at central position and there can be no forward or reverse feedi...

Page 11: ...acquire correct treadling habits loosen the machine pulley as instructed in Fig 26 and place both feet squc irely but comfortable upon treadle as instruct ed in Fig 27 Turn machine pulley over toward...

Page 12: ...per seating of foot Clean this area before checking and setting the presser bar CHECK 1 When presser foot is raised with presser bar lifting lever there should be a 5 16 inch clearance between presser...

Page 13: ...This is accomplished by pinning the shuttle driver at one end of the oscillating shaft and then pinning crank G Fig 31 at the other end of the shaft at the specified timing location TO CHECK THE TIMIN...

Page 14: ...g position and increase its movement Securely tighten set screw L VARIATIONS FOR MACHINE 331K4 Under certain conditions of tacking it may be neces sary to set the check spring higher than it is otherw...

Page 15: ...4 Rotate feed eccentric P as required to obtain desired timing Securely tighten set screw N Close cover plate at rear of arm TO SET THE FEED DOG AT THE CORRECT HEIGHT Before checking height of feed do...

Page 16: ...y in place without binding Then securely tighten both nuts S and screw U LENGTHWISE SETTING Set machine for longest stitch as instructed on page 10 Feed dog should be set so that its movement is equid...

Page 17: ...Look for the trademark SINGER or SIMANCO 0 on every package or container 8 on the needle or numbered part TO ALL WHOM IT MAY CONCERN The improper placing or renewal of the trademark SINGER or any othe...

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