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20

A

B

FORWARD FEEDING

BACKWARD FEEDING

ADJUSTING SCREW

(D)

(C)

MECHANICAL ADJUSTMENT

BUTTONHOLE FEED BALANCE

TO CHECK:

WHEN SEWING BUTTONHOLE, THE STITCHES ON EACH SIDE OF BUTTONHOLE SHOULD

BE THE SAME STITCH DENSITY.

THE RANGE OF 9-12 STITCHES IN THE RIGHT SIDE ROW (BACKWARD FEEDING)

AGAINST 10 STITCHES IN THE LEFT SIDE ROW (FORWARD FEEDING) IS CONSIDERED

ACCEPTABLE.

ADJUSTMENT PROCEDURE:

1. CHECK THE FEED BALANCE BY SEWING BUTTONHOLES.

2. REMOVE THE CAP ON THE FRONT COVER.

3. TURN THE ADJUSTING SCREW IN THE DIRECTION OF (C) IN CASE OF (A) (RIGHT

STITCHES ARE COARSE), OR IN THE DIRECTION OF (D) IN CASE OF (B) (LEFT STITCHES

ARE COARSE).

4. MOUNT THE CAP.

Summary of Contents for 15822

Page 1: ...1 SERVICE MANUAL MODEL 15822 ...

Page 2: ...PRESSER BAR HEIGHT AND ALIGNMENT 12 NEEDLE SWING 13 NEEDLE DROP POSITION 14 CLEARANCE BETWEEN NEEDLE AND SHUTTLE 15 16 FEED DOG HEIGHT 17 NEEDLE BAR HEIGHT 18 NEEDLE TIMING TO SHUTTLE 19 BUTTONHOLE FEED BALANCE 20 DISTORTED PATTERN MODEL NEXT 40 30 ONLY 21 ADJUSTING BUTTONHOLE LEVER POSITION 22 DISENGAGEMENT OF CAM FOLLOWER 23 MOTOR BELT TENSION 24 WIRING 25 PARTS LIST 26 43 ...

Page 3: ...IATE NEEDLE SEE MECHANICAL P 16 BAR HEIGHT ADJUSTMENT NEEDLE BAR HEIGHT 7 INAPPROPRIATE NEEDLE SEE MECHANICAL P 17 TO HOOK TIMING ADJUSTMENT NEEDLE TIMING TO SHUTTLE 8 INAPPROPRIATE NEEDLE SEE MECHANICAL P 13 14 TO SHUTTLE CLEARANCE ADJUSTMENT CLEARANCE BETWEEN NEEDLE AND SHUTTLE 2 FABRIC NOT 1 INCORRECT SEE MECHANICAL P 15 MOVING FEED DOG HEIGHT ADJUSTMENT FEED DOG HEIGHT 2 THREAD ON BOTTOM SIDE ...

Page 4: ...OO MUCH THREAD IS ADJUST THE POSITION OF WOUND ON THE BOBBIN STOPPER 3 LINT IS STUCK INSIDE THE CLEAN THE HOOK RACE HOOK RACE 4 THREAD QUALITY IS CHANGE TO A HIGH QUALITY TOO LOW SEWING THREAD 5 THREAD IS JAMMING CLEAR OUT THE JAMMING AROUND THE BOBBIN THREAD 6 BOBBIN THREAD TENSION IS ADJUST BOBBIN THREAD P 9 TOO STRONG TENSION CORRECTLY 5 NEEDLE 1 NEEDLE IS HITTING THE SEE MECHANICAL P 12 BREAKS...

Page 5: ...OPRIATE BELT SEE MECHANICAL P 22 TENSION ADJUSTMENT MOTOR BELT TENSION 4 UPPERSHAFTGEARISLOOSE ELIMINATE THE LOOSENESS 5 NOT ENOUGH OIL OIL ALL MOVING PARTS 7 DEFORMATION 1 INAPPROPRIATE ZIGZAG SEE MECHANICAL P 11 PATTERN SYNCHRONIZATION ADJUSTMENT NEEDLE SWING 2 INAPPROPRIATE SEE MECHANICAL P 21 DISENGAGEMENT OF CAM ADJUSTMENT FOLLOWER DISENGAGEMENT OF CAM FOLLOWER 3 UPPER THREAD TENSION ADJUST U...

Page 6: ...D SETSCREW B TO ATTACH 2 FOLLOW THE ABOVE PROCEDURE IN REVERSE TOP COVER TO REMOVE 1 REMOVE THE SETSCREWS C 2 SLIDE THE CORNER OF THE TOP COVER SLIGHTLY IN THE DIRECTION OF ARROW BE CAREFUL THAT THE THREAD GUIDE SHOULD NOT INTERFERE WITH THE TOP COVER WHEN REMOVING 3 TAKE THE TOP COVER OUT TO ATTACH 4 FOLLOW THE ABOVE PROCEDURE IN REVERSE ...

Page 7: ...7 A BASE COVER SERVICE ACCESS BASE COVER TO REMOVE 1 LOOSEN THE SETSCREWS A 2 REMOVE THE BASE PLATE TO ATTACH 3 MOUNT THE BASE PLATE AND SECURE IT WITH SETSCREWS ...

Page 8: ...TSCREW A SEE PAGE 4 2 OPEN THE SHUTTLE COVER AND REMOVE THE SETSCREWS B C AND D 3 REMOVE THE CAPS AND SETSCREWS E F G 4 REMOVE THE SETSCREWS H AND I 5 OPEN THE TOP COVER SEE PAGE 5 LOOSEN THE SETSCREW J 6 REMOVE THE REAR COVER TO ATTACH 7 MOUNT THE REAR COVER IN REVERSE PROCEDURE OF THE REMOVING ...

Page 9: ...D 5 2 LOOSEN THE SETSCREW A 3 REMOVE THE SETSCREW B REMOVE THE REAR COVER SEE PAGE 6 LOOSEN THE SETSCREW C E AND H REMOVE THE SETSCREW D 4 OPEN THE SHUTTLE COVER REMOVE THE SETSCREW F 5 REMOVE THE BASE COVER AND THE SETSCREW G SEE PAGE 5 TO ATTACH 6 MOUNT THE FRONT COVER IN REVERSE PROCEDURE OF THE REMOVING ...

Page 10: ...E ABOVE LIMIT ADJUST AS FOLLOWS 1 SET THE TENSION DIAL 4 2 REMOVE THE COVER 3 LOWER THE PRESSER FOOT IF THE TOP TENSION IS TOO LOOSE TURN THE LEAD SCREW IN THE DIRECTION A IF THE TOP TENSION IS TOO TIGHT TURN THE LEAD SCREW IN THE DIRECTION B 4 CHECK THE TOP TENSION AND ATTACH THE COVER WHITE POLYESTER THREAD SIZE 50 PULL THE THREAD AT THE SPEED OF 110 MM SEC IN THE DIRECTION OF ARROW A B ...

Page 11: ...PRING THE BOBBIN THREAD TENSION SHOULD BE 45 55g WHEN PULLING THE THREAD IN THE DIRECTION OF B IF THE TENSION IS OUT OF THE RANGE ADJUST IT AS FOLLOWS ADJUSTMENT PROCEDURE 1 TURN THE ADJUSTING SCREW C IN THE DIRECTION OF D WHEN THE BOBBIN THREAD TENSION IS TOO TIGHT 2 TURN THE ADJUSTING SCREW C IN THE DIRECTION OF E WHEN THE BOBBIN THREAD TENSION IS TOO LOOSE ...

Page 12: ...CE COVER SEE PAGE 7 2 REMOVE THE SETSCREWS B AND THE LAMP SOCKET THEN LOOSEN THE SCREW C ON THE PRESSER BAR HOLDER ADJUST THE DISTANCE BETWEEN THE PRESSER FOOT D AND THE NEEDLE PLATE D TO 6 0 MM 0 24 3 TIGHTEN THE SCREW C SECURELY 4 TIGHTEN THE SETSCREW B TO SECURE THE LAMP SOCKET 5 ATTACH THE FACE COVER NOTE WHEN YOU TIGHTEN THE SCREW C MAKE SURE THAT BOTH SIDES OF THE PRESSER FOOT ARE PARALLEL T...

Page 13: ...E PATTERN SELECTOR DIAL WITH MAXIMUM ZIGZAG WIDTH AND REMOVE THE T TOP COVER SEE PAGE 4 2 LOOSEN TWO SETSCREWS 3 ADJUST THE NEEDLE SWING BY TURNING THE HANDWHEEL WHILE HOLDING THE WORM SO AS NOT TO ROTATE IT UNTIL THE NEEDLE SWING STARTS 2 3 MM ABOVE THE NEEDLE PLATE AFTER THE NEEDLE HAS COME OUT OF THE RIGHT SIDE OF THE NEEDLE HOLE 4 TIGHTEN TWO SETSCREWS 5 MOUNT THE FRONT COVER NOTE AFTER ADJUST...

Page 14: ...OF THE NEEDLE HOLE IN THE NEEDLE PLATE AND THE NEEDLE DROP POSITIONS SHOULD BE EQUAL IF NOT ADJUST AS FOLLOWS ADJUSTMENT PROCEDURE 1 REMOVE THE FACE COVER SEE PAGE 4 2 SET THE PATTERN SELECTOR DIAL AT MAXIMUM ZIGZAG WIDTH 3 LOOSEN THE SETSCREW 4 TURN THE ECCENTRIC PLATE TO ADJUST THE NEEDLE DROP 5 TIGHTEN THE SETSCREW 6 ATTACH THE FACE COVER NOTE CHECK THE HOOK TIMING AFTER THIS ADJUSTMENT ...

Page 15: ...ARANCE BETWEEN 0 05 TO 0 10 MM IF CLEARANCE IS TOO WIDE MOVE THE NEEDLE BAR SUPPORTER IN THE DIRECTION B IF CLEARANCE IS TOO NARROW MOVE THE NEEDLE BAR SUPPORTER IN THE DIRECTION C NOTE AFTER THIS ADJUSTMENT CHECK THAT THE CLEARANCE BETWEEN THE NEEDLE AND NEEDLE PLATE IS 0 15 MM OR MORE AS SHOWN IN FIGURE D IF NOT ADJUST THE CLEARANCE BETWEEN NEEDLE AND SHUTTLE RACE BY USING ADJUSTMENT METHOD NO 2...

Page 16: ...CLEARANCE BETWEEN THE NEEDLE AND THE SHUTTLE RACE IN THE RANGE OF 0 05 TO 0 10 MM 5 SET THE PATTERN SELECTOR DIAL AT TURN THE HANDWHEEL TO CHECK IF THE CLEARANCE BETWEEN THE NEEDLE AND INNER EDGES OF THE SHUTTLE RACE SPRING AT THE LEFT AND RIGHT NEEDLE DROPS ARE EQUAL IF NOT ADJUST BY TURNING THE SHUTTLE RACE UNIT 6 TIGHTEN THE TWO SHUTTLE RACE SETSCREWS B 7 SLIDE THE GEAR BACK TO THE ORIGINAL POS...

Page 17: ...NEEDLE PLATE SHOULD BE 0 75 0 90 MM IF IT IS NOT IN THE RANGE ADJUST AS FOLLOWS ADJUSTMENT PROCEDURE 1 OPEN THE SHUTTLE COVER 2 LOWER THE PRESSER FOOT AND TURN THE HANDWHEEL TOWARD YOU UNTIL THE FEED DOG COMES TO ITS HIGHEST POINT 3 LOOSEN THE SCREW A 4 TURN THE FEED LIFTING PIN TO ADJUST THE HEIGHT OF FEED DOG 0 75 0 90 MM 5 TIGHTEN THE SCREW A 6 TURN THE HANDWHEEL TOWARD YOU TO RECHECK THE HEIGH...

Page 18: ...ACE COVER 2 SET THE PATTERN SELECTOR DIAL AT MODEL NEXT40 PATTERN SELECT DIAL AT WIDTH SELECTOR DIAL AT 0 3 OPEN THE SHUTTLE COVER 4 REMOVE THE SHUTTLE RACE RING 5 TURN THE HANDWHEEL TOWARD YOU UNTIL THE TIP OF THE SHUTTLE HOOK MEETS THE LEFT SIDE OF THE NEEDLE 6 LOOSEN THE LOWER SHAFT CRANK ARM SCREW A 7 ADJUST THE HEIGHT OF THE NEEDLE BAR BY MOVING THE NEEDLE BAR UPWARD OR DOWNWARD WITHOUT TURNI...

Page 19: ... RING 5 TURN THE HANDWHEEL TOWARD YOU UNTIL THE TIP OF THE SHUTTLE HOOK MEETS THE LEFT SIDE OF THE NEEDLE 6 LOOSEN THE LOWER SHAFT CRANK ARM SCREWS A 7 WHILE HOLDING THE SHUTTLE HOOK SO IT DOESN T TURN TURN THE HANDWHEEL TOWARD YOU UNTIL THE NEEDLE COMES TO ITS LOWEST POSITION THEN FURTHER TURN THE HANDWHEEL TO RAISE THE NEEDLE ABOUT 1 7 MM FROM ITS LOWEST POSITION 8 TIGHTEN THE SCREWS A 9 TURN TH...

Page 20: ...E RANGE OF 9 12 STITCHES IN THE RIGHT SIDE ROW BACKWARD FEEDING AGAINST 10 STITCHES IN THE LEFT SIDE ROW FORWARD FEEDING IS CONSIDERED ACCEPTABLE ADJUSTMENT PROCEDURE 1 CHECK THE FEED BALANCE BY SEWING BUTTONHOLES 2 REMOVE THE CAP ON THE FRONT COVER 3 TURN THE ADJUSTING SCREW IN THE DIRECTION OF C IN CASE OF A RIGHT STITCHES ARE COARSE OR IN THE DIRECTION OF D IN CASE OF B LEFT STITCHES ARE COARSE...

Page 21: ... DIFFERENCE BETWEEN FORWARD FEEDING AND BACKWARD FEEDING DURING STRETCH STITCH PATTERNS MAKE AN ADJUSTMENT AS FOLLOWS ADJUSTMENT PROCEDURE 1 REMOVE THE CAP 2 SET THE PATTERN SELECTOR DIAL AT AND THE STITCH LENGTH DIAL AT S S 3 TURN THE STRETCH STITCH ADJUSTING SCREW IN THE DIRECTION OF C WHEN A B OR IN THE DIRECTION OF D WHEN A B 4 MOUNT THE CAP D C STRETCH STITCH ADJUSTING SCREW ...

Page 22: ...TION AND OPEN A 1 6 MM GAP BETWEEN THE SLIDER AND THE BUTTONHOLE FOOT 6 TURN THE ADJUSTING SCREW TO THE LEFT UNTIL THE LCD DISPLAY BH SYMBOL 7 NEXT TURN THE ADJUSTING SCREW TO THE RIGHT UNTIL THE BH SYMBOL DISAPPEARS 8 TURN OFF THE POWER SWITCH 9 ATTACH THE FACE COVER NOTE IF THERE IS ANY LINT OR DUST IN THE BUTTONHOLE SENSOR SLIT LOOSEN THE 2 SCREWS B AND CLEAN IT OUT WITH A SWAB BH SENSOR 1 6 MM...

Page 23: ...ERN SELECTOR CAM 4 LOOSEN THE SET SCREW 5 PUSH THE CONVEX PART OF THE CAM FOLLOWER RELEASING ARM IN THE DIRECTION OF ARROW UNTIL THE CAM FOLLOWER RELEASING ARM TOUCHES POSITION A OF THE PATTERN SELECTOR CAM AND THEN TIGHTEN THE SETSCREW NOTE AFTER THIS ADJUSTMENT CHECK THAT THE CLEARANCE BETWEEN THE ZIGZAG CAM AND THE CAM FOLLOWER IS ABOUT 0 3 MM WHEN SETTING THE CAM FOLLOWER RELEASING ARM ONTO PO...

Page 24: ...BELT JUMPING 2 THE BELT DEFLECTION SHOULD BE 7 MM 9 MM WHEN PRESSING THE MIDDLE OF THE MOTOR BELT WITH APPROXIMATELY 300 GRAMS OF PRESSURE ADJUSTMENT PROCEDURE 1 REMOVE THE FRONT AND REAR COVER SEE PAGE 6 7 2 LOOSEN THE SCREWS A AND B 3 MOVE THE MOTOR UP OR DOWN TO ADJUST THE DEFLECTION ABOUT 7 MM 9 MM 4 TIGHTEN THE SCREWS A AND B 5 ATTACH THE FRONT AND REAR COVER ...

Page 25: ...25 WIRING 1 WIRING FOR MACHINE SOCKET UNIT 2 WIRING DIAGRAM M L M MOTOR L LAMP FOOT CONTROL MACHINE SOCKET LAMP SOCKET MOTOR M L 120V 240V ...

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