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SERVICE MANUAL

SEWING MACHINE MODEL

MS5027PR

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Summary of Contents for MS5027PR

Page 1: ...SERVICE MANUAL SEWING MACHINE MODEL MS5027PR...

Page 2: ...STITCHING 15 16 DISTRIBUTION OF NEEDLE SWING 17 18 STRETCH STITCH BALANCE 19 20 FEED DOG HEIGHT 21 NEEDLE BAR HEIGHT 22 NEEDLE TO HOOK TIMING 23 NEEDLE CLEARANCE TO HOOK 24 BACKLASH LOWER SHAFT GEAR 2...

Page 3: ...Face Cover Plate Thread Cutter Needle Plate Hook Cover Plate Hook Cover Plate Release Button Spool Pin Bobbin Winding Spindle Stitch Width Control Stitch Length Setting Display Stitch Length Control B...

Page 4: ...APPROPRIATE NEEDLE SEE MECHANICAL P 22 BAR HEIGHT ADJUSTMENT NEEDLE BAR HEIGHT 8 INAPPROPRIATE NEEDLE SEE MECHANICAL P 23 TO HOOK TIMING ADJUSTMENT NEEDLE TO HOOK TIMING 9 INAPPROPRIATE NEEDLE SEE MEC...

Page 5: ...THREAD BOBBIN CORRECTLY BOBBIN BOBBIN 2 TOO MUCH THREAD IS ADJUST THE POSITION OF ON THE BOBBIN STOPPER 3 LINT IS STUCK INSIDE THE CLEAN THE HOOK BOBBIN HOLDER 4 THREAD QUALITY IS CHANGE TO A HIGHER...

Page 6: ...NESS 7 DEFORMATION 1 INAPPROPRIATE FEED SEE MECHANICAL P 19 20 PATTERN BALANCE ADJUSTMENT STRETCH STITCH BALANCE 2 INAPPROPRIATE ZIGZAG SEE MECHANICAL P 14 SYNCHRONIZATION ADJUSTMENT NEEDLE SWING 3 UP...

Page 7: ...H THE THREAD COMING FROM THE BACK OF THE SPOOL 1 DRAW THE THREAD THROUGH THE THREAD GUIDE 2 HOLDING THE THREAD TAUT WITH YOUR RIGHT HAND DRAW THE THREAD DOWN INTO THE TENSION AREA AND THEN AROUND THE...

Page 8: ...WN AROUND THE THREADER GUIDE AND UNDER THE HOOK THREADER GUIDE HOOK RELEASE THE THREADER KNOB SLOWLY WHILE HOLDING THE THREAD END WITH YOUR HAND A LOOP OF THE THREAD IS PULLED UP THROUGH THE NEEDLE EY...

Page 9: ...2 REMOVE THE SETSCREWS B AND TAKE THE FACE COVER A OFF TO ATTACH 3 FOLLOW THE ABOVE PROCEDURE IN REVERSE TOP COVER TO REMOVE 1 OPEN THE FACE COVER A 2 REMOVE THE SETSCREWS B AND C 3 TAKE THE TOP COVE...

Page 10: ...THE BASE PLATE B TO ATTACH 2 FOLLOW THE ABOVE PROCEDURE IN REVERSE BED COVER TO REMOVE 1 REMOVE THE TWO SETSCREWS D AND REMOVE THE BED COVER E WHEN YOU REPLACE THE BED COVER SET THE FEED DROP LEVER F...

Page 11: ...LATCH OFF AND THEN REMOVE THE BELT COVER WHEN YOU REATTACH THE BELT COVER SET THE PROJECTION INTO THE GROOVE ON THE FRONT COVER FREE ARM COVER TO REMOVE 1 REMOVE THE SETSCREW A AND THE NEEDLE PLATE 2...

Page 12: ...AGE 7 AND THE BELT COVER SEE PAGE 9 3 REMOVE THE SETSCREWS A AND B 4 LOOSEN SETSCREWS C AND D THEN REMOVE THE FRONT COVER E 5 PULL THE FRONT COVER OFF THE LATCH F OF THE REAR COVER 6 REMOVE THE LOWER...

Page 13: ...CREWS D E AND F 4 LOWER THE PRESSER FOOT LEVER AND PULL AWAY THE REAR PANEL UNIT FROM THE MACHINE FRAME TWIST AND REMOVE THE ARM COVER PART FROM THE PRESSER FOOT LEVER TO ATTACH 5 WHEN YOU REATTACH TH...

Page 14: ...AND 90g WHEN PULLING THE THREAD A UP IN THE DIRECTION OF B USE POLYESTER SEWING THREAD 50 WHITE IF IT IS NOT WITHIN THE ABOVE LIMITS ADJUST AS FOLLOWS ADJUSTMENT PROCEDURE 1 REMOVE THE FRONT COVER UNI...

Page 15: ...ADJUSTMENT PROCEDURE 1 OPEN THE FACE COVER 2 RAISE THE PRESSER FOOT LEVER B AND LOOSEN THE HEXAGONAL SOCKET SCREW D ON THE PRESSER BAR HOLDER E 3 ADJUST THE DISTANCE BETWEEN THE ZIGZAG FOOT A AND THE...

Page 16: ...HE LATERAL NEEDLE SWING STARTS FROM A POSITION 2 MM 0 08 TO 3 MM 0 12 ABOVE THE NEEDLE PLATE IN RIGHT OUTFLOW 4 TIGHTEN THE TWO HEXAGONAL SOCKET SCREWS ON THE UPPER SHAFT WORM 5 ATTACH THE TOP COVER U...

Page 17: ...STMENT STRAIGHT STITCHING TO CHECK 1 SET THE STITCH WIDTH CONTROL AT 0 AND THE STITCH SELECTOR AT 2 TURN THE HANDWHEEL BY HAND 3 THE NEEDLE SHOULD NOT SWING SIDE TO THE SIDE AT THIS SETTING SELECTED P...

Page 18: ...IGHT STITCHING ADJUSTMENT PROCEDURE 1 REMOVE THE TOP COVER SEE PAGE 7 2 LOOSEN SETSCREW A 3 MOVE THE ZIGZAG WIDTH ROD B UNTIL THE NEEDLE CEASES ITS ZIGZAG MOVEMENT WHEN YOU TURN THE HANDWHEEL TOWARD Y...

Page 19: ...PER ON THE NEEDLE PLATE AND LOWER THE PRESSER FOOT 5 LOWER THE NEEDLE TO MARK THE NEEDLE POINT A ON A PIECE OF PAPER BY TURNING THE HANDWHEEL 6 RAISE THE NEEDLE TO ITS HIGHEST POSITION 7 SLIDE THE STI...

Page 20: ...EDLE SWING ADJUSTMENT PROCEDURE 1 OPEN THE FACE COVER AND LOOSEN THE HEXAGONAL SOCKET SCREW D 2 MOVE THE NEEDLE BAR SUPPORTER E IN EITHER DIRECTION UNTIL THE DISTANCES A TO B AND A TO C BECOME EQUAL 3...

Page 21: ...H STITCH AND THE STRETCH STITCH ADJUSTER AT 2 PLACE A PIECE OF PAPER ON THE NEEDLE PLATE AND LOWER THE PRESSER FOOT 3 TURN THE HANDWHEEL TO MARK NEEDLE POINTS ON THE PAPER 4 THE NEEDLE SHOULD PENETRAT...

Page 22: ...REMOVE THE CAP F 2 IF THE REVERSE STITCH LENGTH B IS SHORTER THAN THE FORWARD STITCH LENGTH A TURN THE ADJUSTING SETSCREW E IN THE DIRECTION OF C IF THE REVERSE STITCH LENGTH B IS LONGER THAN THE FORW...

Page 23: ...OCEDURE 1 SET THE PRESSURE FOOT PRESSURE ADJUSTING LEVER AT 3 AND LOWER THE PRESSER FOOT 2 TURN ON THE POWER SWITCH 3 REMOVE THE BED COVER SEE PAGE 8 4 TURN THE HANDWHEEL TOWARD YOU TO SET THE FEED DO...

Page 24: ...3 SELECT THE PATTERN LEFT NEEDLE POSITION 4 TURN THE HANDWHEEL TOWARD YOU UNTIL THE TIP OF HOOK MEETS THE RIGHT SIDE OF THE NEEDLE 5 LOOSEN THE SETSCREW A 6 ADJUST THE HEIGHT OF THE NEEDLE BAR BY MOV...

Page 25: ...STITCH PATTERN LEFT NEEDLE POSITION 3 REMOVE THE BED COVER SEE PAGE 8 4 TURN THE HANDWHEEL TOWARD YOU AND SET THE NEEDLE BAR AT THE LOWEST POSITION 5 LOOSEN THE SETSCREW A AND B ON THE LOWER SHAFT GEA...

Page 26: ...TEST PIN A AND THE SHARP END B OF THE HOOK SHOULD BE BETWEEN 0 05 0 002 AND 0 10 MM 0 004 ADJUSTMENT PROCEDURE 1 REMOVE THE BED COVER SEE PAGE 8 2 LOOSEN THE SETSCREWS C D AND E 3 TIGHTEN THE SETSCREW...

Page 27: ...F THERE IS MORE THAN A 0 8 MM 0 03 BACKLASH BETWEEN THE GEARS ADJUST AS FOLLOWS ADJUSTMENT PROCEDURE 1 REMOVE THE BED COVER SEE PAGE 8 AND LOOSEN HEXAGONAL SOCKET SCREW C 2 TURN THE LOWER SHAFT BUSHIN...

Page 28: ...E STITCH WIDTH CONTROL 6 5 2 ATTACH THE AUTOMATIC BUTTONHOLE FOOT 3 SEW A BUTTONHOLE AND CHECK THE STITCH BALANCE BETWEEN THE RIGHT AND LEFT SIDES OF THE BUTTONHOLE 4 THE CORRECT BUTTONHOLE STITCH BAL...

Page 29: ...SEE PAGE 8 2 LOOSEN HEXAGONAL SOCKET SCREW A 3 IF THE RIGHT SIDE OF THE BUTTONHOLE IS TOO SPARSE TURN THE RING B IN THE DIRECTION OF C IF THE LEFT SIDE OF THE BUTTONHOLE IS TOO SPARSE TURN THE RING B...

Page 30: ...1 SET THE MACHINE AS FOLLOWS STITCH SELECTOR STITCH WIDTH CONTROL 6 5 2 TURN THE HANDWHEEL TOWARD YOU UNTIL THE NEEDLE COMES TO THE CENTER POSITION 3 THE NEEDLE SHOULD NOT MOVE WHEN YOU TURN THE STITC...

Page 31: ...HANDWHEEL TOWARD YOU UNTIL THE NEEDLE COMES TO THE CENTER OF THE SLIT IN THE NEEDLE PLATE 3 LOOSEN THE SETSCREWS A AND B 4 TIGHTEN THE SETSCREW A SLIGHTLY 5 MOVE THE PLATE C IN EITHER DIRECTION AS SH...

Page 32: ...ECTOR TO AND THE STITCH LENGTH CONTROL TO 0 2 PLACE A PIECE OF PAPER ON THE NEEDLE PLATE 3 CHECK IF THE PAPER MOVES FORWARD OR BACKWARD WHEN YOU TURN THE HANDWHEEL TOWARD YOU 4 THE MACHINE SHOULD NOT...

Page 33: ...VER SEE PAGE 9 2 SET THE STITCH SELECTOR AT AND THE STITCH LENGTH CONTROL AT 0 3 PLACE A PIECE OF PAPER ON THE NEEDLE PLATE 4 IF THE PAPER MOVES FORWARD TURN THE ADJUSTING SCREW C IN DIRECTION A IF TH...

Page 34: ...SELECT THE LEFT NEEDLE POSITION IN MAXIMUM ZIGZAG THEN SELECT THE LEFT NEEDLE POSITION IN STRAIGHT SEWING 3 IF THE RESULT LOOKS LIKE A SEE BELOW TURN THE ADJUSTING SCREW IN DIRECTION D IF THE RESULT L...

Page 35: ...H FOOT R THEN LOWER THE PRESSER BAR 2 LOOSEN THE SETSCREW A 3 PULL DOWN THE BH LEVER UNTIL IT TOUCHES FOOT R AND THE BAR B HITS THE FRONT BASE PLATE ALSO MAKE SURE THE BH LEVER ADJUSTING PLATE C TOUCH...

Page 36: ...AS FOLLOWS ADJUSTMENT PROCEDURE 1 REMOVE THE BELT COVER SEE PAGE 9 2 A IF THE BAR TACK IS SEWN TOO EARLY TURN THE HEXAGONAL SOCKET SCREW E IN DIRECTION C B IF THE BAR TACK IS SEWN TOO LATE TURN THE HE...

Page 37: ...IN B AND INSERT THE THREADER COVER C ADJUSTMENT OF THREADER PLATE 3 IF THE HOOK D IS TOUCHING THE RIGHT OR LEFT SIDE OF NEEDLE EYE LOOSEN THE SETSCREW E AND SLIDE THE THREADER PLATE H SEE DRAWING 2 4...

Page 38: ...A TOO LOOSE MOTOR BELT TENSION MAY CAUSE THE BELT TEETH TO JUMP OVER THE PULLEY 2 THE CORRECT MOTOR BELT TENSION IS ACHIEVED WHEN THE BELT IS PUSHED IN ABOUT 7 MM 0 28 9 MM 0 36 UNDER A PRESSURE OF A...

Page 39: ...BUT YOU SHOULD STILL CHECK FOR POSSIBLE LUBRICATION NEEDS WHENEVER SERVICING THE MACHINES OIL USE GOOD QUALITY SEWING MACHINE OIL AT THE POINTS A B C D E F G INDICATED BY THE BLACK ARROWS GREASE USE W...

Page 40: ...38 MS5027PR WIRING OF TERMINAL BLOCK L LAMP M MOTOR M L...

Page 41: ...39 MS5027PR SPECIAL TOOLS REQUIRED SLOTTED SCREW DRIVER PHILLIPS SCREW DRIVER ALLEN SCREW DRIVER ALLEN WRENCH TEST PIN...

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