Clearance Between Needle And Tip Of The Rotary Hook - ELNA Elnita ec 30 Service Manual

MECHANICAL ADJUSTMENT

CLEARANCE BETWEEN NEEDLE AND TIP OF THE ROTARY HOOK

* The clearance between the needle and the point of hook should be –0.10 to +0.05 mm.
Adjustment procedure:
1. Remove the face cover. (Refer to page 4).
2. Remove the needle plate and bobbin holder.
Attach the master needle.
Turn the power switch on.
Select the zigzag stitch , and set the stitch width to "5.0".
3. Remove the setscrew on the needle plate, the needle plate and the bobbin holder.
Replace the needle with the master needle and tighten the needle clamp screw.
4. Loosen the setscrews A (2 pcs.) and move the presser bar base plate in the direction of the arrows (B or C).
* Move the presser bar base plate in the direction of B when the clearance is too large.
* Move the presser bar base plate in the direction of C when the clearance it too small.
Adjust the clearance betweeen the needle and hook betweeen -0.10 to +0.05 mm. Tighten the setscrews.
* The edge of presser bar base plate should always touches the bosses while adjusting the clearance it.
5. Attach the bobbin holder and needle plate. Attach the face cover.
NOTE:
Be sure that the clearance between the needle drop position and the edge of needle should be 0.2 mm more
for both sides (Refer to page 9).
Setscrew
Needle plate
Bobbin holder
Direction C
Setscrew A
Direction B
Boss
Needle clamp screw
Master needle
Tip of hook
–0.10 to +0.05 mm
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