2022-Ultrafeed LSZ Guidebook - Flipbook - Page 50
Hook/Driver Gap
Oscillating hook sewing machines have loose tolerances between the shuttle gib hook and the shuttle driver. This play
between the parts is intentional and allows the Ultrafeed to sew a wide variety of thread sizes. The typical play between
parts is 0.04 inch (A).
Check the Rotational Timing
of the Shuttle Gib Hook
G
68
F
D
The shuttle gib hook (B) is driven by the shuttle
driver (C). To change the rotation of the hook,
the driver must be repositioned.
1. Turn the balance wheel so the gib
hook point (D) is at its farthest position
counterclockwise as shown (68).
A
2. Use your finger to push the gib hook
counterclockwise to remove any gap at E.
C
3. Measure the distance between the gib
hook point (D) and the needle (F). The
driver is correctly positioned when the point
is between 1/8 inch and 3/16 inch left of
the needle (G).
B
If spaced properly, the driver is set
correctly. If not, continue to adjust the
driver (p. 48).
68
E
47 |
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