Clearance Between Needle And Tip Of Rotary Hook - ELNA eXpressive920 Service Manual

Clearance between needle and tip of the rotary hook (method 1)
The clearance between the needle and the point of hook should be -0.1 to +0.05 mm.
Test pin
-0.1 to +0.05 mm
Left needle position
Reverse
stitch button
Start/Stop button
Setscrew
Needle bar
supporter
Clearances A and B must be even
A
Mechanical Adjustment
Tip of hook
Right needle position
B
23
1. Remove the top cover (see page 2).
2. Remove the presser foot, the needle plate and the bobbin
holder.
3. Replace the needle with the test pin.
4. Turn the power switch ON while pressing the Start/Stop
button and the Reverse stitch button to enter the factory
setting mode.
Press "Bobbin" key. The machine will set the zigzag width
at maximum.
5. Turn the handwheel toward you until the tip of the hook
comes behind the test pin.
6. Loosen the setscrew (use an Allen wrench of 2 mm width
across flats) and move the needle bar supporter in
the direction of the red arrow so the test pin just touch the
tip of the hook. Tighten the setscrew.
7. Attach the bobbin holder and the needle plate. Check the
needle drop position. The needle drops in the center of the
needle plate hole as shown.
If the clearances A and B are not even, adjust the needle drop
position first then adjust the clearance between the needle and
the tip of the hook by the method (2) on the next page.