Adjusting The Forward/Back Position Of The Needle Bar - Brother LZ2-B855E Service Manual

6-8. Adjusting the forward/back position of the needle bar

1121S
r
1047S
* Make this adjustment if the needle bar bracket assembly r and joint t are not fixed securely.
Loosen the screw y while making this adjustment.
Adjust so that the needle is in the center of the needle plate hole at equal distances from the front and rear edges of
the hole.
Furthermore, adjust so that there is no longitudinal play in the needle bar, and so that it moves smoothly to the left
and right when the power is turned off and it is pushed by hand. (If the sewing machine is operated when the needle
bar does not move smoothly, it may cause the zigzag motor to skip.)
1. Remove the presser foot while making this adjustment.
2. Loosen the two set screws (hexagonal screws 2 mm diagonally opposite each other) q, and then push pin R w or
pin F e to adjust.
Turn the machine pulley and check that the needle moves down into the center of the needle plate hole.
3. Securely tighten the two screws q.
* After adjusting, be sure to check that there is no longitudinal play in the needle bar, and that it moves smoothly
to the left and right when the power is turned off and it is pushed by hand.
* After making this adjustment, you should also carry out the adjustment in "6-9. Adjusting the right/left position of
the needle bar" (Page 6-07).
y
t
w
e
q
LZ2-B855E,B856E
w
6. ADJUSTMENTS
q
e
1014S
6-06