Baby Lock BLMAG Service Manual
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Baby Lock BLMAG Service Manual

Baby Lock BLMAG Service Manual

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BABYLOCK BLMAG Service Manual
BLMAG
Service Manual
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Summary of Contents for Baby Lock BLMAG

  • Page 1 BABYLOCK BLMAG Service Manual BLMAG Service Manual...

  • Page 2: Table Of Contents

    BABYLOCK BLMAG Service Manual CONTENT 1. Open External Cover ------------------------------------------------------------------------------------------------------------ 3 2. Covers Removal ------------------------------------------------------------------------------------------------------------------ 4 3. Presser bar height ------------------------------------------------------------------------------------------------------------- 10 4. Needle bar height----------------------------------------------------------------------------------------------------------------11 5. Needle drop position --------------------------------------------------------------------------------------------------------- 12 6. Height of Feed dog ------------------------------------------------------------------------------------------------------------ 13 7. Transmission of Feed dog (regulate) -------------------------------------------------------------------------------------- 14 8.
  • Page 3 BABYLOCK BLMAG Service Manual...

  • Page 4: Covers Removal

    BABYLOCK BLMAG Service Manual 2. COVER REMOVAL 2-1. Face Cover Remove the needle Plate “A” Remove screw and slide Face cover to the left. Caution: Do not to pull too hard as there is an LED light attached. Carefully slide the LED “B” away...
  • Page 5 BABYLOCK BLMAG Service Manual 2-2. Top Lid Pull Top Cover straight up 2-3. Top Cover...

  • Page 6: Bottom Plate

    BABYLOCK BLMAG Service Manual 2-4. Bottom Plate “E” Remove 4 screws and detach the bottom base cover. While attaching the Bottom Cover, be sure the hook on the knee Lifter Linkage is positioned as shown, or the knee lifet will not engage.

  • Page 7: Bottom Cover

    BABYLOCK BLMAG Service Manual 2-5. Bottom Cover “F” Remove screw from the free arm cover at the Rear of machine. “G” Remove 2 screws and detach the Free Arm Cover.
  • Page 8 BABYLOCK BLMAG Service Manual 2-6. Front Cover “H” Remove screw and take away Front Cover.
  • Page 9 BABYLOCK BLMAG Service Manual 2-7. Rear Cover “I” Remove screw from the Rear Cover (On the bottom). “J” Remove screw raise handle, and detach Rear Cover (Above “J” Upper Shaft) Screw is longer “I”. than screw...

  • Page 10: Presser Bar Height

    BABYLOCK BLMAG Service Manual 3. Presser Bar Height Tool: 2.0mm hexagon screwdriver & 6.0mm height of gauge Standard: Height of presser foot is 6.0mm A. Open face cover. (See P4.) B. Lift presser bar lever to upper position. C. Loosen hexagon screw (A) of presser bar guide bracket (M986-012).

  • Page 11: Height Of Feed Dog

    BABYLOCK BLMAG Service Manual 6. Height of Feed dog Tool: 7.5mm nut driver, flathead screwdriver and gauge measurement for height of feed dog. Standard: Height of Feed dog is 0.9mm when it starts to move ~height of feed dog moves to highest position 1.1mm.

  • Page 12: Transmission Of Feed Dog (Regulate)

    BABYLOCK BLMAG Service Manual 7. Transmission of Feed dog Tool: 2.5mm hexagon screwdriver. Standard: Transmission of Feed dog is in between 0-1mm when needle is moved down from highest position. Check: Turn hand wheel to move needle to highest position, and check transmission of feed dog.
  • Page 13 BABYLOCK BLMAG Service Manual 5. Needle drop (center) position Tool: 2.0mm hexagon screwdriver and flathead screwdriver. Standard: 3.5 mm each side in the needle plate hole when Needle position is in the center of needle plate hole. Requirement of Adjustment: Select stitch No. 006 zigzag as adjusting sample pattern, and needle will stop in right position.

  • Page 14: Installation Of Bobbin Case

    BABYLOCK BLMAG Service Manual 10. Installation of Bobbin case Tool: Phillips screwdriver. Standard: Distance is 1mm between bobbin case and stop shrapnel holder (M986-154/730152) Adjustment: A. Open needle plate B. Loosen screw (A) of Stop shrapnel holder (M986-154). C. Tighten screw (A) of Stop shrapnel holder (M986-154) and install needle plate back.
  • Page 15 BABYLOCK BLMAG Service Manual 9. Timing of rotary hook. Tool: 2.5mm hexagon screwdriver and a specialized gauge of measurement. Standard: The needle is required to be at a proper position with rotary shuttle hook tip Check: A. Set Pattern No. at 002 (straight stitch in left position) or adjust stitch width to “0” for left needle position when pattern No.

  • Page 16: Needle Bar Height

    BABYLOCK BLMAG Service Manual 4. Needle bar height Tool: 2.0mm hexagon screwdriver, flathead screwdriver. Standard: Sharp point of needle is lowered to touch bottom surface of rotary hook. Note: Needle must be inserted and against the pin in the top and hold.

  • Page 17: Needle Clearance In Rotary Hook

    BABYLOCK BLMAG Service Manual 8. Needle clearance in rotary hook. Tool: 2.0mm hexagon screwdriver. Standard: The distance between needle(HA-1 #14) and rotary shuttle sharp hook is 0.05～0.1mm Check: Move needle position to center by setting stitch width at 「3.5」. Adjustment: A.

  • Page 18: Upper Tension Dial

    BABYLOCK BLMAG Service Manual 11. Upper Tension Dial Tool: Tension meter Standard: Tension range is 40g when Tension dial is set at level 4 Check: A. Set Tension Dial at level 4. B. Lift presser bar C. Threading the thread with tension meter D.

  • Page 19: Tension Of Bobbin Case

    BABYLOCK BLMAG Service Manual 12. Tension of Bobbin case Tool: Tension meter and small flathead screwdriver. Standard: Tension range is 13-14g with 50w Madeira thread Check: A. Open needle plate, and take bobbin case off. B. Threading with meter to check (see figure) Adjustment: A.

  • Page 20: Auto Needle Threader

    BABYLOCK BLMAG Service Manual 13. Auto Needle threader Tool: 1.5 mm hexagon screwdriver and flathead screwdriver Standard: Hook of Auto needle threader is correctly into needle eye to get thread through it. Check: A. Turn hand wheel to make needle raising to highest position.

  • Page 21: Timing Of Take-Up Lever

    BABYLOCK BLMAG Service Manual 14. Timing of take–up lever Covers Tool: 1.5 mm hexagon screwdriver. Standard: Timing of take-up lever Check: A. Turn hand wheel counter–clockwise, and make sure the take-up lever is over thread guide plate(M986- 122) about 1.0-1.2mm high while the needle is at highest position.
  • Page 22 BABYLOCK BLMAG Service Manual 15. Check starting point & Calibrate Pattern Check: (1) Power of machine is turned on. (2) Stepping motor will senses the start point when needle position is tuned to Upper or lower. Problem 1: Stepping motor doesn’t have motion to sense the starting point or starting point is off standard position.

  • Page 23: Change Feeding Stepping Motor(128082)

    BABYLOCK BLMAG Service Manual 16. Change feeding stepping motor (128082) 1. Open bottom cover 2. Loosen the hexagon socket screw (A) on feed regulating crank (M986-013), and release feed regulating set after 4 screws (C) being loosened, then complete set of feeding regulating unit can be taken off the Arm bed.

  • Page 24: Auto Buttonhole Adjustment

    BABYLOCK BLMAG Service Manual 17. Auto Buttonhole adjustment Problem 1: buttonhole presser foot is not sensed when you select button pattern and pull buttonhole lever down. Solution: 1. Open face cover 2. Loosen the screw of buttonhole switch case (128024), then adjust and move the switch case backward, tighten screw and test.
  • Page 25 BABYLOCK BLMAG Service Manual...

  • Page 26: Replace Of Touch Board

    BABYLOCK BLMAG Service Manual 18. Replace of touch board Tool: Philips screwdriver Disassembling: Loosen 4 screws, and take main board off first. ※Note: 1. Mind the pins and connecting socket on the touch board (20K36T)-Ref. blue mark, when you disassemble and assemble main board.

  • Page 27: Motor Belt Adjustment

    BABYLOCK BLMAG Service Manual 19. Motor belt adjustment Problem: (1)When the tension of belt is loose the machine doesn’t run properly. Solution: 1. Loosen screw (A) for releasing the bracket of motor. 2. Bracket of motor can be moved downward or Upward until belt is in proper tension.

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