Kenmore 16677 - Serger Sewing Machine Servicing Manual
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Kenmore 16677 - Serger Sewing Machine Servicing Manual

Service manual
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SERVICING MANUAL

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Summary of Contents for Kenmore 16677 - Serger Sewing Machine

  • Page 1 SERVICING MANUAL...

  • Page 2: Table Of Contents

    SERVICE MANUAL AND PARTS LIST TO CHANGETHE FACE PLATE UNIT ..................TO CHANGE THE BACK COVER UNIT ..................TO CHANGE THE TOP COVER ....................TO CHANGE THE FRONT COVER UNIT ................... TO CHANGE THE SIDE COVER UNIT ..................TO CHANGE THE MACHINE BASE ....................

  • Page 3: To Changethe Face Plate Unit

    TO CHANGE THE FACE PLATE UNIT TO REMOVE: 1. LOOSEN SETSCREW (A) AND 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).

  • Page 4: To Change The Back Cover Unit

    TO CHANGE THE BACK COVER UNIT TO REMOVE: 1. REMOVE SETSCREWS (A) AND THE SPOOL STAND. 2. REMOVE SETSCREWS (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).

  • Page 5: To Change The Top Cover

    TO CHANGE THE TOP COVER TO REMOVE: 1. REMOVE THE 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.

  • Page 6: To Change The Front Cover Unit

    TO CHANGE THE FRONT COVER UNIT TO REMOVE: 1. REMOVE SETSCREWS (A) AND THE LOOPER COVER UNIT. 2. REMOVE THE FACE PLATE UNIT, THE BACK COVER UNIT AND TOP COVER. 3. TURN THE HAND WHEEL TOWARD YOU TO SET THE UPPER LOOPER AT ITS LOWEST POSITION.

  • Page 7: To Change The Side Cover Unit

    TO CHANGE THE SIDE 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: To Change The Machine Base

    TO CHANGE THE MACHINE BASE TO REMOVE: 1. REMOVE SETSCREWS (A), (B), (C), (D) AND TWO HINGE SCREWS (E). REMOVE TWO BASE CUSHIONS (F) AND WASHERS. 2. REMOVE THE MACHINE BASE. NOTE. DO NOT REMOVE OTHER BASE CUSHIONS. TO ATTACH: 3.

  • Page 9: To Change The Machine Socket

    TO CHANGE THE MACHINE SOCKET TO REMOVE: 1. REMOVE THE BACK COVER UNIT. 2. REMOVE SETSCREWS (A), (B) AND THE MACHINE SOCKET UNIT FROM THE MOTOR FIXING PLATE. 3. REMOVE TWO SETSCREWS (C). PULL OUT THE CORD CONNECTORS. TO ATTACH: 4.

  • Page 10: To Adjust The Needle Height

    TO ADJUSTTHE NEEDLE HEIGHT CORRECT SETTING: THE DISTANCE BETWEEN THE TIP OF NEEDLE ON THE RIGHT AND THE SURFACE OF NEEDLE PLATE SHOULD BE 11.6 TO 12.2 MM WHEN THE NEEDLE BAR IS AT ITS HIGHEST POSITION. TO ADJUST: 1. REMOVE THE LOOPER COVER UNIT, FACE PLATE UNIT, BACK COVER UNIT, TOP COVER AND FRONT COVER UNIT.

  • Page 11: To Adjust The Presser Bar Height

    TO ADJUSTTHE PRESSER BAR HEIGHT CORRECT SETTING: THE DISTANCE BETWEEN THE SURFACE OF NEEDLE PLATE AND BOTTOM OF PRESSER FOOT SHOULD BE 4.7 TO 5.3 MM WHEN THE PRESSER BAR LIFTER IS RAISED. TO ADJUST: 1. REMOVE THE LOOPER COVER UNIT, FACE PLATE UNIT, BACK COVER UNIT, TOP COVER AND FRONT COVER UNIT.

  • Page 12: To Adjustthe Feed Dog Height

    TO ADJUSTTHE FEED DOG HEIGHT CORRECT SETTING: WHEN THE PRESSER FOOT IS LOWERED AND FEED DOGS ARE ATTHEIR HIGHEST POSITION, THE DISTANCE BETWEEN THE SURFACE OF NEEDLE PLATE AND BOTTOM OF PRESSER FOOT SHOULD BE 0o75 TO 0.95 MM. TO ADJUST: 1.

  • Page 13: To Adjust The Timing Of The Needle And The Feed Dog

    TO ADJUSTTHETIMING OFTHE NEEDLE AND THE FEED DOG CORRECT SETTING: WHEN THE TIP OF RIGHT NEEDLE IS AT 2 TO 4 MM ABOVE THE NEEDLE PLATE IN ITS DOWN- WARD MOTION, AND PRESSER FOOT LOWERED, THE TOP OF THE FEED DOG TEETH SHOULD BE LEVEL WITH THE TOP SURFACE OF NEEDLE PLATE AT THEIR REARMOST POSITION.

  • Page 14: To Adjust The Timing Of The Needle And The Upper Knife

    TO ADJUST THE TIMING OF THE NEEDLE AND THE UPPER KNIFE CORRECT SETTING: THE UPPER KNIFE TIMING IS THE SAME AS THAT OFTHE NEEDLE BAR. THE UPPER KNIFE SHOULD BE ALSO AT ITS HIGHEST POSITION WHEN THE NEEDLE BAR IS AT HIGHEST POSITION.

  • Page 15: To Adjust The Height Of The Lower Looper

    TO ADJUST THE HEIGHT OF THE LOWER LOOPER CORRECT SETTING: THE HEIGHT OF LOWER LOOPER IS 65.7 MM FROM CENTER OF LOWER LOOPER SHAFT AS ILLUSTRATED BELOW. TO ADJUST: 1. SET THE UPPER KNIFE IN DOWN POSITION TO LOOSEN SETSCREW (A). 2.TURN THE HANDWHEELTO GETTHE LOWER LOOPER IN ITS LEFTMOST POSITION.

  • Page 16: And The Lower Looper/Needle Guards

    TO ADJUST THE CLEARANCE BETWEEN THE NEEDLES AND THE LOWER LOOPER/NEEDLE GUARDS (1 of 3) CORRECT SETTING: BOTH RIGHT AND LEFT NEEDLES SHOULD HAVE AN EQUAL CLEARANCE FROM THE FRONT EDGE OFTHE NEEDLE HOLES ON THE NEEDLE PLATE. THE STANDARD CLEARANCE BETWEEN THE LEFT AND RIGHT NEEDLE AND THE TIP OF THE LOWER LOOPER IS 0 MM TO 0.05 MM.
  • Page 17 TO ADJUST THE CLEARANCE BETWEEN THE NEEDLES ANDTHE LOWER LOOPER/NEEDLE GUARDS (2 of 3) CORRECT SETTING: THE STANDARD CLEARANCE BETWEEN THE RIGHT NEEDLE AND THE TIP OFTHE LOWER LOOPER SHOULD BE OTO 0.1 MM. TO ADJUST: 1. REMOVE THE LEFT NEEDLE ONLY, 2, TURN THE HANDWEEL TOWARDS YOU TO BRING THE TIP OF THE LOWER LOOPER FROM THE LEFT HAND TO THE REAR SIDE OF THE RIGHT NEEDLE.
  • Page 18 TO ADJUST THE CLEARANCE BETWEEN THE NEEDLES AND THE LOWER LOOPER/NEEDLE GUARDS (3 of 3) CORRECT SETTING: THE STANDARD CLEARANCE BETWEEN THE NEEDLE AND THE TIP OF THE LOWER LOOPER SHOULD BE 0 MM TO 0.05 MM. TO ADJUST: 1. CHANGE THE RIGHT NEEDLE FROM #11 TO #14. LOOSEN THE HEXAGONAL SOCKET SCREW (A).

  • Page 19: And The Fixed Needle Guard

    TO ADJUST THE CLEARANCE BETWEEN THE NEEDLES THE FIXED NEEDLE GUARD CORRECT SETTING: THE CLEARANCE BETWEEN NEEDLE AND THE FIXED NEEDLE GUARD SHOULD BE 0.1 TO 0.4 MM. TO ADJUST: 1. REMOVE THE PRESSER FOOT AND THE NEEDLE PLATE AND LOWER THE NEEDLE TO ITS LOWEST POSITION.

  • Page 20: To Adjust The Position Of The Chaining Finger

    TO ADJUSTTHE POSITION OF THE CHAINING FINGER CORRECT SETTING: WHEN SET THE NEEDLE PLATE SETTING KNOB TO THE GUIDE LINE (S), THE CHAINING FINGER SHOULD TOUCH THE SIDE OF NEEDLE PLATE, AND THE TIP OF CHAINING FINGER SHOULD BE SAME LEVEL WITH THE TIP OF THE NEEDLE ON THE NEEDLE PLATE. TO ADJUST: 1.

  • Page 21: To Adjust The Position Of The Upper Looper

    TO ADJUST THE POSITION OF THE UPPER LOOPER CORRECT SETTING: WHEN THE UPPER LOOPER IS ATTHE LEFTMOST POSITION, THE DISTANCE BETWEEN THE CENTER OF NEEDLE ON THE RIGHT AND THE CENTER OF LOOPER EYE SHOULD BE 4.8 TO 5.2 TO ADJUST: 1.

  • Page 22: To Adjust The Timing Of The Needle And The Lower Looper

    TO ADJUST THE TIMING OF THE NEEDLE AND THE LOWER LOOPER CORRECT SETTING: WHEN THE NEEDLE COMES UP 2.8 TO 3.2 MM FROM ITS LOWEST POSITION, THE TIP OF THE LOWER LOOPER COMES JUST LEFT OFTHE NEEDLE (#11) ON THE RIGHT. TO ADJUST: 1.

  • Page 23: To Adjust The Timing Of The Upper And Lower Loopers

    TO ADJUST THE TIMING OF THE UPPER AND LOWER LOOPERS CORRECT SETTING: WHEN THE LOWER LOOPER MOVES TO THE RIGHT, THE TIP OF UPPER LOOPER MEETS THE LOWER LOOPER WITHIN 0.2 TO 1.2 MM FROM THE LEFT OF LOWER LOOPER EYE AS SHOWN IN FIG.

  • Page 24: To Adjust The Clearance Between The Loopers

    TO ADJUST THE CLEARANCE BETWEEN THE LOOPERS CORRECT SETTING: WHEN THE LOOPERS MEET AS SHOWN IN FIG. 2, THE CLEARANCE SHOULD BE 0 TO 0.1 MM AS SHOWN IN FIG. 1. TO ADJUST: 1. REMOVE THE PRESSER FOOT AND NEEDLE PLATE. 2.
  • Page 25 TO ADJUST THE CLEARANCE BETWEEN THE NEEDLE AND THE UPPER LOOPER CORRECT SETTING: WHEN THE UPPER LOOPER MEETS WITH NEEDLE, THE CLEARANCE SHOULD BE: 0TO +0.1 MM ATTHE NEEDLE ON THE LEFT. -0.05 TO +0.05 MM ATTHE NEEDLE ON THE RIGHT. TO ADJUST: 1.

  • Page 26: To Adjust The Position Of The Knives

    TO ADJUST THE POSITION OF THE KNIVES CORRECT SETTING: THE EDGE OFTHE LOWER KNIFE SHOULD BE LEVELED WITH THE SURFACE OF NEEDLE PLATE. WHEN THE UPPER KNIFE IS AT THE LOWEST POSITION, THE FRONT LOWER CORNER OF UPPER KNIFE SHOULD BE 0.8 TO 1.5 MM BELOW THE EDGE OF LOWER KNIFE. TO ADJUST: BEFORE PROCEEDING WITH THIS ADJUSTMENT, CHECK THE UPPER KNIFE TIMING.

  • Page 27: To Adjust The Position Of The Lower Looper Thread Guide

    TO ADJUSTTHE POSITION OF THE LOWER LOOPER THREAD GUIDE LOWER LOOPERTHREAD GUIDE (4) LOOSEN SETSCREW (A), AND ADJUST THE LOWER LOOPER THREAD GUIDE (4) SO THAT THE HOLE OFTHREAD GUIDE IS IN LINE WITH THE GROOVE OF LOWER LOOPER AS SHOWN IN FIG. 1. NOTE: AFTER ADJUSTMENT, CHECKTHAT LOWER LOOPER THREAD GUIDE (4) SHOULD NOT TOUCH THE ARM AND FEED DOG.

  • Page 28: To Adjust The Stitch Length

    TO ADJUST THE STITCH LENGTH CORRECT SETTING: THE ACTUAL STITCH LENGTH SHOULD BE 2.8 TO 3.0 MM WHEN THE STITCH LENGTH DIAL IS SET AT "3" AND THE DIFFERENTIAL FEED DIAL AT "1.0". TO ADJUST: 1. SET THE STITCH LENGTH DIAL AT "3" AND THE DIFFERENTIAL FEED DIAL AT "1.0". 2.

  • Page 29: To Adjust The Thread Tension Dials

    TO ADJ UST THE THREAD TENSION DIALS TO CHECK: WHEN THE TENSION DIAL IS SET AT "3", THE STANDARD THREAD TENSION MEASURED WITH WHITE POLYESTER THREAD (#50) SHOULD BE AS FOLLOWS: • LEFT NEEDLE THREAD 36-48GRAM • RIGHT NEEDLETHREAD 13-25GRAM •...

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