MC 11000
(C)
(B)
(A)
Adjusting Clearance between Needle and Hook
The clearance between the needle and rotary hook should be -0.10 to + 0.05 mm.
1. Remove the extension plate, needle, needle plate, bob-
bin holder, and bed cover, and attach the Test pin (1).
2. Turn the power switch on and select stitch No. 8, then
set the zigzag width to 7.0 by pressing ADJUST key.
3. Loosen the screws (A), (B) and (C) and tighten the screw
(C) slightly.
4. Turn the handwheel toward you and adjust the clear-
ance between the test pin (1) and the tip of rotary hook
(2) to - 0.10 to + 0.05 mm by moving the rotary hook set
plate (3) up or down.
5. Tighten the screws (A), (B) and (C) firmly.
6. Check the rotary hook driver gear and the lower shaft
gear backlash.
If gears engage tightly or loosely, check the section en-
titled Adjusting Backlash between Hook Drive and Lower
Shaft Gear.
7. Reattach the bed cover, bobbin holder, needle plate,
extension table and needle.
(1)
(2)
(3)
0.10 to + 0.05 mm
20
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