Clearance Between Needle And Tip Of The Rotary Hook - ELNA eXcellence 780 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
Hexagonal
socket screw
Needle bar
supporter
Clearances A and B must be even
A
Mechanical adjustment
Tip of hook
Right needle
position
B
1. Remove the top cover (see page 1).
2. Remove the presser foot, the needle plate and the
bobbin holder.
3. Attach the test pin.
4. Turn the power switch ON while pressing the Start/
Stop button and the Reverse stitch button. The LCD
shows 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 hexagonal socket screw (use an Allen
wrench of 2 mm width across flats) and move the
needle bar supporter in the direction of the arrow so
the test pin just touch the tip of the hook. Tighten the
hexagonal socket screw.
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 and then adjust the clearance between
the needle and the tip of the hook by the method (2) on
the next page.
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