Adjusting Clearance Between Needle And Hook - ELNA eXperience 620 Service Manual

ADJUSTING CLEARANCE BETWEEN NEEDLE
The clearance between needle and rotary hook should be -0.10 to +0.05 mm.
1. Turn the power switch on. Select the zigzag stitch "
2. Remove the needle plate and bobbin holder. Attach the test pin.
3. Remove the bed cover. (See page 7) loosen the setscrews (A), (B) and slightly loosen the set
screw (C).
4. Turn the handwheel toward you to bring the tip of the hook behind the test pin and adjust the
clearance between the test pin and the tip of rotary hook to -0.10 to +0.05 by moving the rotary
hook set plate up or down.
5. Tighten the screw (A), (B), (C) firmly.
6. Check the rotary hook driver gear and the lower shaft gear backlash.
If gears mesh or engage tightly or loosely, adjust backlash between hook drive and lower shaft
gears".
7. Reattach the bed cover, base needle plate and bobbin holder. Replace the test pin with the regular
needle.
AND HOOK
Needle plate
Bobbin holder
Rotary hook set
plate
Setscrew (A)
" and set the zigzag width at maximum.
Test pin
-0.1 to + 0.05 mm
Setscrew (C)
14
MODEL: eXperience 620
Tip of rotary hook
Setscrew (B)