14
MODEL: eXperience 620
ADJUSTING CLEARANCE BETWEEN NEEDLE
AND HOOK
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 " " and set the zigzag width at maximum.
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.
Test pin
-0.1 to + 0.05 mm
Tip of rotary hook
Setscrew (B)
Rotary hook set
plate
Setscrew (A)
Setscrew (C)
Needle plate
Bobbin holder
Содержание eXperience 620
Страница 1: ...SERVICE MANUAL eXperience 620...