6] Adjustment; Adjusting The Needle Bar Height - JUKI HZL-G Series Service Manual

[6] Adjustment

6-1 Adjusting the needle bar height

○ Remove the face cover.
Adjustment value:
・ Distance from the bottom end of the pin inside needle bar surface to the top surface of the throat plate:
9 mm
・ When the needle is mounted, the needle eye tilts rightward by 2 degrees.
Adjustment procedure .
. Select the straight stitch using the pattern selecting button. Choose center needle position.
2. Make a gauge needle by cutting a household needle HA x  to dimension A. Fit the gauge needle into the
needle bar.
3. Prepare an appropriate metal plate of thickness B. (A = 9 mm - B)
4. Bring the needle bar to its lowest dead point. Slightly loosen needle bar connecting stud setscrew
long as the needle does not slip off from the connecting stud.
5. Place the metal plate on the throat plate. Move the needle bar up and down by hand to adjust so that the
cut surface of the gauge needle aligns with the top surface of the metal plate. Then, turn the needle bar
by two degrees of an angle as illustrated in the sketch below.
6. Temporarily tighten needle bar connecting stud setscrew
adjusted. Then, securely tighten the setscrew.
Adjustment procedure 2.
. Assemble a household HA x  needle #4 into the needle bar, bring the needle bar to its highest dead
point. Move the needle bar in the same way as described in procedure  to adjust the needle bar height
so that the needle tip is spaced 5.5 mm from the top face of the throat plate.
[Lowest dead point]
2°
Gauge needle
A
Metal plate
Throat plate
B
– 3 –
and reconfirm that the needle bar is correctly
1
[Highest dead point]
HA×1 #14
1
as
1
15.5 mm