Clearance Between The Needle And The Hook - ELNA E9020 Service Manual

(4) Clearance between the needle and the hook

• Confirm that the clearance is provided between the needle and blade point
of hook. Loosen screw 1 and finely adjust the clearance by turning
adjustment shaft 2. (It is possible only when the presser pressure is max.)
[Lateral balnce]
Adjust the balance between the right/left needle and the blade point of hook.
<Reference>
• Select the service mode P40, H (Needle throw to left, center and right)
Provide a sufficient clearance between the left or right needle and the hook,
and turn ON the start/stop switch.
• Gradually turning adjustment shaft 2, temporarily tighten screw 1 at the
position where the needle slightly comes in contact with the hook.
• Slightly moving lateral adjustment plate 4, adjust the lateral balance of
the needle bar depending on the noise which comes from the contact of
the left or right needle with the hook.
• Furthermore, turn adjustment shaft 2, and securely tighten screw 1 at
the position where the needle does not come in contact with the hook.
• Press 3 with your finger and when the noise comes from the contact of
the left or right needle with the hook, the clearance between the needle
and the hook is the best dimension.
How to adjust
Left stitch Right stitch
base line
base line
Shift 4 to the right when
the right is larger.
0.03 to 0.07 mm
Left stitch Right stitch
base line
base line
Shift 4 to the left when
the left is larger.
19
Disassembly
A to E on page 15
(At the time when adjusting the
balance of left and right)
Location of components to be adjusted
Adjustment drawing
2
Adjustment shaft
1
4
3