Tuesday, June 21, 2016

Janome sewing machine - Janome MC9500 – How to adjust the needle thread tension – How to adjust the Needle drop – How to adjust the needle bar height- Adjusting the feed dog height - Home Appliances Repair and Service

Category: Home Appliances Repair and Service 

Contents of this article 

  • How to adjuster the need tread tension
  • How to adjust the Needle drop
  • How to adjust the Needle bar height 

Janome MC9500

Adjusting Needle Drop Position
When the straight stitch is selected on the touch panel, the needle should be positioned in the center of the needle plate hole.
When the zigzag stitch is selected with the zigzag width set to the maximum (7.0 ), the clearance between the side of the needle and the edge of hole of the needle plate at the left and right needle position should be 0.2 mm or more.
1. Remove the top cover and slect the pattern No. 1 (Straight stitch).
Lower the needle to its lowest position by turning the handwheel toward you.
2. Loosen the Screw 1. Move the Zigzag rod 2 left or right to set the needle 3 in the center of the Hole of the needle plate 4, then tighten Screw 1.
3. Select the pattern No.6 (Zigzag). Set the zigzag width to maximum (7.0).
4. Turn the handwheel toward you to check if the clearance between the side of the needle and the edge of the Hole of the needle plate 4, at the left and right needle position, is 0.2 mm or more 5.
5. Attach the top cover.
1.Screw
2.Zigzag rod
3.Needle
4.Needle plate hole
5.0.2 mm or more
Adjusting Presser Foot Position and Height
When the presser foot is raised, the clearance between the presser foot and the needle plate should be 0.6 mm.
When the presser foot is lowered, the edge of the foot and the feed dog window on the needle plate should be parallel.
1. Remove the face cover.
2. Raise the presser foot, loosen Screw 1 to adjust the presser foot position and presser foot height, then tighten screw 1.
3. Attach the face cover.
Adjusting Needle Bar Height
The standard distance between the upper edge of the needle eye and the tip of the rotary hook should be in the range of 1.6 - 2.0 mm when the rotary hook meets the right side of the needle in ascending travel of needle from its lowest position.
1. Remove the presser foot, Needle plate 1 and Bobbin holder 2 .
2. Turn the power switch “ON” and select the pattern No.2.
3. Press “ADJUST” key and set the zigzag width at “0”, then turn the power switch “OFF”.
4. Turn the handwheel to raise the needle bar from the lowest position until the tip of the rotary hook meets with the right side of the needle 11 .
5. Remove the face cover and loosen Screw 3 as shown.
6. Move the Needle bar 4 up or down to adjust the needle bar height.
7. Tighten the Screw 3. Be sure that the groove 5 on the needle bar facing right in the front.
8. Attach the face cover.
9. Reattach the Bobbin holder 2 , Needle plate (A) 1 , presser foot.
Adjusting Feed Dog Height
When the pressure adjusting dial is set at “3” and the presser foot is lowered, the highest position of the feed dog should be 0.80 to 0.90 mm from the surface of the needle plate.
To adjust feed dog height
1. Remove the base cover, base lid (1) and bed cover.
2. Set the pressure dial at “3” and lower the presser bar lifter, then turn the power switch “ON”.
3. Turn the handwheel toward you until the feed dog comes to its highest position.
4. Loosen Screw (A) 1.
5. Loosen Nut 2 and adjust the feed dog height to 0.8 to 0.90 mm 6 by turning the adjusting screw (B) 3 .
6. Tighten Nut 2.
7. Tighten Screw (A) 1.
To adjust the feed dog position parallel to needle plate
Turn the handwheel toward you until the feed dog comes to its highest position, the feed dog 5 and the needle plate should be parallel. If not, follow the instructions below.
8. Prepare the hexagonal socket screw 8 and insert it to the Threaded hole (C) 9 and screw it until the tip of threaded screw reaches the bottom.
9. Loosen Screw (D) 10 .
10. Turn the hexagonal socket screw 8 and adjust the feed dog 5 parallel to the needle plate.
11. Tighten Screw (D) 10.
12. Loosen the hexagonal socket screw 8 and remove it.
13. Reattach the bed cover, base cover and base lid (1)
Adjusting Needle Thread Tension
The standard upper thread tension should be 75 to 90 grams when the tension dial is set at “AUTO”, measured with a #50 polyester thread being pulled at approximately 110 mm/sec. in the direction of arrow.
1. Set the Thread tension dial at “AUTO”.
2. Lower the presser foot.
3. Remove the face cover and adjust the thread tension.
(A) If the thread tension is less than 75 g, .................turn the screw in the direction of “ + ”.
(B) If the thread tension is more than 90 g, ...............turn the screw in the direction of “ - ” 1 Pulling direction: (pulling speed 110 mm/sec.)