Kenmore 16677 - Serger Sewing Machine Servicing Manual Download | Manualshive

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Summary of Contents for 16677 - Serger Sewing Machine

Page 1: ...SERVICING MANUAL ...

Page 2: ... CLEARANCE BETWEEN THE NEEDLES 1 2 3 4 5 6 7 8 9 10 11 12 13 AND THE LOWER LOOPER NEEDLE GUARDS 14 16 TO ADJUST THE CLEARANCE BETWEEN THE NEEDLES AND THE FIXED NEEDLE GUARD 17 TO ADJUST THE POSITION OF THE CHAINING FINGER 18 TO ADJUST THE POSITION OF THE UPPER LOOPER 19 TO ADJUST THE TIMING OF THE NEEDLE AND THE LOWER LOOPER 20 TO ADJUST THE TIMING OF THE UPPER AND LOWER LOOPERS 21 TO ADJUST THE C...

Page 3: ...ND REMOVE THE FACE PLATE UNIT TO ATTACH 2 FIT THE U GROOVE BETWEEN SETSCREW A AND SET PLATE PUT THE RIBS OF FACE PLATE INTO THE FRONT COVER UNIT AND BACK COVER UNIT TIGHTEN THE SETSCREW A BACK COVER UNIT_ RIB FRONT COVER UNIT SETSCREW RIB FACE PLATE UNIT U GROOVE ...

Page 4: ...TSCREWS B C AND D 3 REMOVE THE BACK COVER UNIT TO ATTACH 4 PUT THE RIBS OF BACK COVER INTO THE FRONT COVER UNIT AND TIGHTEN SETSCREWS B C AND D 5 ATTACH THE SPOOL STAND WITH SETSCREWS A RIB SPOOL STAND RIB I I I SETSCREW A SETSCREW C SETSCREW B i I I SIDE COVER UNIT BACK COVER _UNIT SETSCREW D ...

Page 5: ...E BACK COVER UNIT 2 LOOSEN TWO SETSCREWS A THROUGH HOLE OF THREAD GUIDE PLATE AS ILLUSTRATED REMOVE THE TOP COVER TO ATTACH 3 PUT THE RIBS IN THE FRONT COVER 4 TIGHTEN TWO SETSCREWS A TOP COVER THREAD GUIDE PLATE FRONT COVER UNIT _1_ II SETSCREW A ...

Page 6: ...TS LOWEST POSITION REMOVE SETSCREWS B C D E AND THE FRONT COVER UNIT TO ATTACH 4 ATTACH THE FRONT COVER UNIT WITH SETSCREWS B C D AND E 5 ATTACH THE LOOPER COVER UNIT WITH SETSCREW A 6 ATTACH THE TOP COVER THE BACK COVER UNIT AND FACE PLATE UNIT FRONT COVER UNIT SETSCREW B S J UPPER LOOPER_ SHOULD BESET _ ATITS LOWEST POSITION J SETSCREW C tY J I I SETSCREW D SETSCREW A _ I I I I I _SETSCREW E LOO...

Page 7: ...E COVER UNIT TO REMOVE 1 OPEN THESIDE COVER UNIT REMOVETHESNAP RING E 3AND PUSH DOWN THESHAFTTO REMOVE TO ATTACH 2 ATTACH THE SIDE COVER UNIT INSERT THE SHAFT AND ATTACH THE SNAP RING SNAP RING E 3 SIDE COVER UNIT SHAFT ...

Page 8: ...ASE CUSHIONS F AND WASHERS 2 REMOVE THE MACHINE BASE NOTE DO NOT REMOVE OTHER BASE CUSHIONS TO ATTACH 3 ATTACH THE MACHINE BASE UNIT AND TIGHTEN SETSCREWS A B C AND D 4 ATTACH THE TWO BASE CUSHIONS F WASHERS AND TIGHTEN HINGE SCREWS E WASHER WASHER BASE 1 HINGE SCREW E CUSHION F SETSCREW _ SETSCREW D ...

Page 9: ...E CORD CONNECTORS TO ATTACH 4 INSERTTHE CORD CONNECTORS AS SHOWN BELOW 5 ATTACH THE MACHINE SOCKET AND TIGHTEN TWO SETSCREWS C 6 ATTACH THE MACHINE SOCKET UNIT ON THE MOTOR FIXING PLATE TIGHTEN SET SCREWS A B 7 ATTACH THE BACK COVER UNIT SETSCREWS A _ SETSCREWS B MOTOR FIXING PLATE TO LAMP SOCKET LAMP SOCKET LEAD _ _ _t _0 MOTOR i _ l_ _t MACHINE SOCKET SETSCREWS C LAMP SOCKET LEAD ...

Page 10: ...E UNIT BACK COVER UNIT TOP COVER AND FRONT COVER UNIT 2 TURN THE HANDWHEEL TOWARD YOU AND SET THE NEEDLE BAR AT ITS HIGHEST POSITION 3 LOOSEN SETSCREW A TO ADJUST THE HEIGHT AND TIGHTEN SETSCREW A AFTER THE ADJUSTMENT IS DONE 4 TURN THE HANDWHEEL TOWARD YOU ONE CYCLE AND RECHECK THE NEEDLE BAR HEIGHT 5 ATTACH THE FRONT COVER UNIT LOOPER COVER UNIT TOP COVER BACK COVER UNIT AND FACE PLATE UNIT SETS...

Page 11: ... UNIT TOP COVER AND FRONT COVER UNIT 2 RAISE THE PRESSER BAR LIFTER AND LOOSEN SETSCREW A THEN ADJUSTTHE PRESSER BAR HEIGHT THE SIDE OF PRESSER FOOT SHOULD BE PARALLEL WITH THE HOLE OF NEEDLE PLATE 3 TIGHTEN THE SETSCREW A 4 ATTACH THE FRONT COVER UNIT LOOPER COVER UNIT TOP COVER BACK COVER UNIT AND FACE PLATE UNIT PRESSER BAR LIFTER SETSCREW A NEEDLE TOP SURFACE OF NEEDLE TO BE PARALLEL __ l R _ ...

Page 12: ...OSEN THE MAIN SUB FEED DOG SCREWS A B 4 PCS 5 PUSH THE MAIN FEED DOG STRAIGHT UPWARD AND ADJUSTTHE DISTANCE BETWEEN THE SURFACE OF NEEDLE PLATE AND BOTTOM OF PRESSER FOOT THEN TIGHTEN SETSCREWS A 2 PCS 6 WHEN THE TOP OF THE MAIN FEED DOG IS LEVEL WITH THE TOP SURFACE OF NEEDLE PLATE IN ITS DOWNWARD MOTION BY TURNING THE HANDWHEEL PUSH THE SUB FEED DOG STRAIGHT UPWARD UNTIL ITS TOP SURFACE IS TO BE...

Page 13: ...SER FOOT AND LOOSE TWO SETSCREWS A ON MAIN FEED CAM TWO SETSCREWS B ON SUB FEED CAM AND ADJUST THE POSITION OFTHE SUB FEED CAM AND TIGHTEN SETSCREWS B TURN THE SUB FEED CAM TO THE DIRECTION C IF THE FEED DOG IS LOWER THAN THE SURFACE OFTHE NEEDLE PLATE TURNTHE SUB FEED CAM TOTHE DIRECTION D IFTHE FEED DOG IS HIGHER THAN THE SURFACE OFTHE NEEDLE PLATE NOTE WHEN TURNING THE SUB FEED CAM PUSH THE SUB...

Page 14: ...N C WHEN THE UPPER KNIFE TIMING IS DELAYED TURN THE UPPER KNIFE DRIVE CAM TO THE DIRECTION D WHEN THE UPPER KNIFE TIMING IS TOO SOON 4 TIGHTEN TWO SETSCREWS B FIRMLY MOVE THE BALANCE WEIGHT TO RIGHT MATCH THE GUIDE LINE ON THE BALANCE WEIGHT WITH THE ONE ON THE MAIN SHAFT CORRECTLY THEN TIGHTEN THE TWO SCREWS A 5 TURN THE HANDWHEEL TOWARD YOU ONE CYCLE AND RECHECK THE NEEDLE AND THE UPPER KNIFE TI...

Page 15: ...HE HANDWHEELTO GETTHE LOWER LOOPER IN ITS LEFTMOST POSITION 3 PLACE THE GAUGE ON THE LOWER LOOPER SHAFT AS SHOWN 4 LOOSEN SETSCREW A AND MOVE THE LOWER LOOPER UP OR DOWN TO GET THE TIP OF LOWER LOOPER IS IN LINE WITH GUIDE LINE OF GAUGE 5 TIGHTEN SETSCREW A 6 REMOVE THE GAUGE AND SET THE UPPER KNIFE IN UP POSITION SETSCREW A GUIDE LINE OF GAUGE am JGE NO 787 G01 LOWER LOOPER UNII LOWER LOOPER THRE...

Page 16: ...REMOVETHE LOOPER COVER UNIT FACE PLATE UNIT BACK COVER UNIT TOP COVER FRONT COVER UNIT PRESSER FOOT AND NEEDLES 2 BEFORE LOOSENING SETSCREW C ATTACH THE NEEDLE GAUGE 787 G02 TO PREVENT CHANGE OF NEEDLE BAR HEIGHT DURING THE ADJUSTMENT ATTACH TWO 11 NEEDLES ON THE NEEDLE CRAMP LOOSEN SETSCREW C ADJUSTTHE CLEARANCES BETWEEN NEEDLES AND THE FRONT EDGE OFTHE NEEDLE HOLES OF THE NEEDLE PLATE EQUAL BYTU...

Page 17: ...DE OF THE RIGHT NEEDLE 3 LOOSEN THE HEXAGONAL SOCKET SCREWS A ON THE FRONT NEEDLE GUARD OPEN A SPACE BETWEEN THE FRONT NEEDLE GUARD AND THE NEEDLE 4 LOOSEN THE HEXAGONAL BOLT B ADJUST THE CLEARANCE BETWEEN THE RIGHT NEEDLE AND THE TIP OF THE LOWER LOOPER TO BE 0 MM TO 0 1 MM BY SLIDING THE LOWER LOOPER UNIT TO THE FRONT OR BACK TIGHTEN THE HEXAGONAL BOLT B REAR NEEDLE GUARD HEXAGONAL BOLT B _ LOWE...

Page 18: ...MM TIGHTEN THE HEXAGONAL SOCKET SCREW A 3 ATTACH 14 NEEDLE TO THE LEFT NEEDLE CLAMP TURN THE HANDWHEEL TOWARDS YOU TO CHECK THE CLEARANCE BETWEEN THE LEFT NEEDLE AND THETIP OFTHE LOWER LOOPER MAKE SURE THE FRONT NEEDLE GUARD IS TOUCHING THE NEEDLE SLIGHTLY AND THE REAR NEEDLE GUARD IS NOT TOUCHING THE NEEDLE 4 CHECK THE TIMING BETWEEN THE NEEDLE AND THE LOWER LOOPER 5 RECHECK THE NEEDLE BAR HEIGHT...

Page 19: ...WER THE NEEDLE TO ITS LOWEST POSITION 2 LOOSEN SETSCREW A AND ADJUSTTHE POSITION OFTHE FIXED NEEDLE GUARD 3 TIGHTEN SETSCREW A 4 ATTACH THE NEEDLE PLATE AND THE PRESSER FOOT NEEDLE PLATE SETTING KNOB SHOULD BE SET AT S THE CLEARANCE BETWEEN THE NEEDLE AND FIXED NEEDLE GUARD FIXED NEEDLE GUARD CHAINING FINGER O E OUO o FIXED NEEDLE GUARD SETSC_ NEEDLE 14 NEEDLE PLATE SETTING KNOB SHOULD BE SET AT _...

Page 20: ... PLATE TO ADJUST 1 REMOVE THE PRESSER FOOT 2 SETTHE NEEDLE PLATE SETTING KNOBTOTHE GUIDE LINE S ON THE CHAINING FINGER UNIT 3 LOOSEN TWO SETSCREWS A AND MOVE THE CHAINING FINGER UNIT TO CORRECT POSITION 4 TIGHTEN TWO SETSCREWS A 5 SET THE NEEDLE PLATE SETTING KNOB TO THE GUIDE LINE S AND R AND CHECK THE POSITION OF CHAINING FINGER 6 ATTACH THE PRESSER FOOT SHOULD BE SAME LEVEL A TO BE TOUCHED SETS...

Page 21: ... IS ATTHE LOWEST POSITION AS SHOWN IN FIG 1 3 TIGHTEN THE HEXAGONAL SOCKET SCREWS A 4 TURN THE HANDWHEEL AND BRING THE UPPER LOOPER TO THE LEFTMOST POSITION 5 LOOSEN THE HEXAGONAL SOCKET SCREW B AND ADJUSTTHE DISTANCE BETWEEN THE CENTER OF NEEDLE AND CENTER OF UPPER LOOPER EYE AS SHOWN IN FIG 2 AND FIG 3 6 TIGHTEN THE HEXAGONAL SOCKET SCREW B 7 CHECK THE UPPER AND LOWER LOOPER TIMING AND THE CLEAR...

Page 22: ...UGE TOUCHES THE NEEDLE BAR LOWER BUSHING AS SHOWN IN FIG 2 6 IN THIS CONDITION LOOSEN THE HEXAGONAL BOLT C JUST ENOUGH TO MOVE THE LOWER LOOPER BASE ADJUSTTHE LOWER LOOPER POSITION IN ORDER TO MEETTHE TIP OF LOWER LOOPER WITH LEFT SIDE OF NEEDLE 11 AS SHOWN IN FIG 3 AND FIG 4 TIGHTEN HEXAGONAL BOLT C 7 REMOVE THE GAUGE 787 GO2 CHECK THE CLEARANCE BETWEEN THE NEEDLE AND LOWER LOOPER CHECKTHE CLEARA...

Page 23: ...PPER LOOPER 2 REMOVE THE MACHINE BASE 3 LOOSEN TWO SETSCREWS AND ADJUST THE TIMING BY TURNING THE UPPER LOOPER DRIVE CAM IN THE DIRECTION OF A IF THE TIMING OF UPPER LOOPER IS ADVANCED AS SHOWN IN FIG 3 B IF THE TIMING OF UPPER LOOPER IS DELAYED AS SHOWN IN FIG 4 THE ALLOWANCE IS O 2TO 1 2 MM FROM THE LEFT EDGE OF LOWER LOOPER EYE AS SHOWN IN FIG 1 4 TIGHTEN TWO SETSCREWS 5 CHECK THE CLEARANCE BET...

Page 24: ...THE HANDWHEEL TOWARD YOU TO BRING THE LOOPERS AS SHOWN IN FIG 2 3 LOOSEN THE SETSCREW AND ADJUSTTHE CLEARANCE BY MOVING THE UPPER LOOPER TO THE BACK OR FRONT AS SHOWN IN FIG 3 4 TIGHTEN THE SETSCREW FIRMLY 5 CHECK THE CLEARANCE BETWEEN THE UPPER LOOPER AND NEEDLE 6 ATTACH THE NEEDLE PLATE AND PRESSER FOOT UPPER LOOPER OTO 0 1 MM J LOWER LOOPER FIG 1 SETSCREW t UPPER _ LOOPER __ FIG 3 LOWER LOOPER ...

Page 25: ...ATTHE NEEDLE ON THE RIGHT TO ADJUST 1 TURN THE HANDWHEEL TOWARD YOU WITH YOUR HAND TO BRING THE NEEDLE JUST BEHIND THE UPPER LOOPER IN DOWNWARD TRAVEL 2 LOOSEN THE SETSCREW AND ADJUST THE CLEARANCE BETWEEN THE BOTH NEEDLES AND UPPER LOOPER 3 TIGHTEN THE SETSCREW 4 CHECK THE CLEARANCE BETWEEN LOOPERS NEEDLE I CLEARANCE I_UPPER FIG 1 LOOPER UPPER LOOPER SETSCREW UPPER LOOPER DRIVING SHAFT FIG 2 23 ...

Page 26: ...ER KNIFE TO ADJUST BEFORE PROCEEDING WITH THIS ADJUSTMENT CHECK THE UPPER KNIFE TIMING 1 LOOSEN THE TWO SETSCREWS A AND ADJUSTTHE LOWER KNIFE POSITION 2 TURN THE HANDWHEEL TO BRING UPPER KNIFE TO ITS LOWEST POSITION 3 LOOSEN THE HEXAGONAL BOLT B AND ADJUST THE POSITION OF UPPER KNIFE 4 TIGHTEN THE HEXAGONAL BOLT B UPPER KNIFE __ _ _ WER KNIFE HEXAGONAL BOLT B SURFACE OF NEEDLE LATE TOP OF LOWER KN...

Page 27: ... SHOULD NOT TOUCH THE ARM AND FEED DOG LOOPER THREAD TAKE UP LEVER LOOSEN SETSCREW C AND THE BOTTOM SIDE OFTHE LOOPER THREAD TAKE UP LEVER IS IN LINE WITH THE BOTTOM SIDE OF THE UPPER LOOPER WAVING ARM TIGHTEN SETSCREW C TO SECURE THE POSITION THE HOLE IS LINE WITH THE GROOVE OF LOWER LOOPER LOWER LOOPER THREAD GUIDE 4 VIEW FROM B LOWER LOOPER THREAD GUIDE 4 LOWER LOOPER SETSCR_ LOWER LOOPER THREA...

Page 28: ...IAL FEED DIAL AT 1 0 2 REMOVE THE LOOPER COVER UNIT FACE PLATE UNIT BACK COVER UNIT TOP COVER AND FRONT COVER UNIT 3 IFTHE ACTUAL STITCH LENGTH IS LONGER THAN 3 0 MM TURN THE ADJUSTING SCREW IN THE DIRECTION A IFTHE ACTUAL STITCH LENGTH IS SMALLER THAN 2 8 MM TURN THE ADJUSTING SCREW IN THE DIRECTION B 4 ATTACH THE FRONT COVER UNIT LOOPER COVER UNIT TOP COVER BACK COVER UNIT AND FACE PLATE UNIT AD...

Page 29: ...EAD 17 27 GRAM ADJUSTMENT PROCEDURE 1 REMOVETHE BACK COVER ANDTHETOP COVER 2 ADJUST EACH THREAD TENSION WITH THE ADJUSTING PLATE A IF THE THREAD TENSION IS AT STRONGER LEVEL SHIFT THE ADJUSTING PLATE IN THE DIRECTION B IF THE THREAD TENSION IS AT WEAKER LEVEL SHIFT FHE ADJUSTING PLATE IN THE DIRECTION C 3 ROTATE THE THREAD TENSION DIAL WHILE SEWING TO CHECK THE SEWING PERFORMANCE 4 ATTACH THE TOP ...

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