73
Check the Rotational Positioning
of the Shuttle Race Guide Shaft
1�
Remove the needle plate (p� 55,
17
)
and feed dog (p� 61,
18
)�
2�
Remove the bobbin case and bobbin, but
leave the retaining ring (p� 36,
B
) and gib hook
(p� 36,
D
) installed�
3�
Rotate the balance wheel until the needle
enters the shuttle (
73
)�
If positioned properly, the needle is centered
in the “triangular” opening of the retaining ring
cap spring from front to back (
A
)�
4�
Minor adjustments can be made by loosening
the two screws (
B
) to slide the cap spring
forward or back�
If more movement is required, you’ll need
to adjust the rotational positioning of the
shuttle race guide shaft (p� 54)�
A
A
B
74
D
E
C
Adjust the Rotational Positioning of the Shuttle Race Guide Shaft
1�
Determine that there is no more than 1/64 inch of play
in the left-right movement of the lower shaft (
C
)� If
there is more than 1/64 inch of play, reset the left-right
positioning of the shuttle gib hook (p� 51)�
2�
Rotate the balance wheel until the needle enters the
shuttle (
73
)�
3�
With left hand, grab the shuttle race guide shaft (
D
);
hold to the right and maintain light pressure�
4�
With right hand, loosen the clamp screw (
E
) slightly�
Adjust the shuttle race guide shaft (
D
) so that the
needle is positioned correctly within the retaining ring
cap spring (
A
)�
5�
Once you've confirmed correct positioning, tighten
the compressible timing clamp screw (
E
)� Be careful
while doing this to keep clamp (
F
) tight up against the
casting leg (
G
)�
Confirm that there is very little play in the left-right
movement of the lower shaft (
C
)�
You have now completed timing your Ultrafeed�
F
G
53 |
Sailrite�com
Ultrafeed
®
LS Guidebook
| 54
