ELNA CE10, Руководство по обслуживанию

Страница: 13 / 31

11
Adjusting Clearance between Needle and Hook
The clearance between needle and rotary hook should be -0.10 to + 0.05 mm.
1 Remove the needle plate, bobbin holder, base cover
and bed cover (See page 3 - 4), and attach the Test
pin .
2 Loosen Screw (A) , (B) , (C) and tighten
Screw (C) temporarily.
3 Turn the handwheel toward you and adjust the
clearance between the Test pin and the Tip of
rotary hook position to - 0.10 to + 0.05 mm by
moving the rotary hook set plate up or down.
4 Tighten the screws (A) ,(B) , (C) firmly.
5 Check the rotary hook driver gear and the lower shaft
gear backlash.
If gears mesh or engage tightly or loosely, check
“Adjusting Backlash between Hook Drive and Lower
Shaft Gear”. (See page 12 )
6 Reattach the bed cover, base cover, base lid, needle
plate and bobbin holder.
Screw (A)
Screw (C)
Rotary hook set plate
Screw (B)
Test pin
- 0.10 to +0.05 mm
Tip of rotary hook
2 1
3
4
6
5
7
2
1
3
4
6
5
7
2
1
3
4
6
5
7
2
5
1
4
2