Hook Timing - ELNA eXpressive920 Service Manual

Hook timing

The amount of ascending travel of the needle bar from its left and lowest position until the tip of the rotary hook meets the right
side of the needle should be 3.70 to 4.00 mm
Left needle position
Hook
Reverse
stitch button
Start/Stop button
Lower shaft gear
Mechanical Adjustment
Tip of hook meets the
right side of the needle
3.70 to 4.00 mm
Lowest needle position
Hexagonal socket screws
1. Remove the bed cover (see page 3).
2. 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.
3. Remove the presser foot, the needle plate and the bobbin
holder.
4. Turn the handwheel toward you to lower the needle at its
left and lowest position.
5. Loosen the hexagonal socket screws of the lower shaft
gear (use an Allen wrench of 2.5 mm width across flats).
6. Turn the handwheel toward you to raise the needle bar
by 3.85 mm from its lowest position.
7. Turn the lower shaft gear until the tip of rotary hook meets
with the right side of the needle.
21