Check the Needle Bar Height
1�
Check that the needle is installed properly (p� 32)�
2�
Remove the left end cover of the sewing machine as shown
(p� 55,
13
)�
3�
Manually lower the needle bar (
A
) to its lowest position�
4�
We mark the proper height of the needle bar for your machine
by putting a score on the needle bar� Check to see if the mark
just disappears under the top surface of the upper needle bar
guide (
B
)�
If aligned properly, the needle bar is set correctly�
Proceed to check the rotational timing (p� 47)� If not,
continue to adjust the needle bar height�
Adjust the Needle Bar Height
1�
Manually operate the machine to move the needle bar to the
bottom of its stroke (all the way down)�
2�
Unlock the needle bar from the drive collar (
C
) by loosening
the set screw (
D
)� Use a 2mm hex key to loosen�
3�
With the needle bar at the bottom of its stroke, reposition the
needle bar so the score on the needle bar just disappears
under the top surface of the upper needle bar guide (
B
)�
Gently twist the needle bar up or down to position the mark,
making sure the screw that secures the needle is facing the
inside of the sewing machine arm (
E
)� Tighten the drive collar
set screw very tightly� Ensure needle is properly oriented after
adjustment (p� 32)�
If your Ultrafeed is still not performing properly after
adjusting the needle bar height, proceed to check the
rotational timing (p� 47)�
A
Ultrafeed Timing
A
65
66
E
67
B
B
B
D
A
C
Scan to watch a video on how
to adjust machine timing�
D
C
45 |
Sailrite�com
Ultrafeed
®
LSZ Guidebook
| 46
