Sailrite ULTRAFEED LS - Shuttle Race Guide Shaft Timing; Check and Adjust Shuttle Race Guide Shaft Rotational Positioning

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 conrmed 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)�
Conrm 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
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LS Guidebook | 54