Leatherwork Guidebook - Flipbook - Page 44
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 Leatherwork to sew a wide variety of
thread sizes. The typical play between parts is 0.04 inch.
Check the Rotational Timing of the Shuttle Gib Hook
47
The Shuttle Gib Hook (A) is driven by the Shuttle
Driver (B). To change the rotation of the hook,
the driver must be repositioned.
F
C
A
E
B
D
41 |
1.
Turn the balance wheel so the gib
hook point (C) is at its furthest position
counterclockwise (47).
2.
Use your finger to push the gib hook
counterclockwise to remove any gap at (D).
3.
Measure the distance between the gib
hook point (C) and the needle (E). The
driver is correctly positioned when the
point is between 1/8 inch and 3/16 inch
counterclockwise of the needle (F).
If spaced properly, the driver is set correctly.
If not, continue to adjust the driver (p. 42).
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