11
7777----3 Timing of the spreader
3 Timing of the spreader
3 Timing of the spreader
3 Timing of the spreader
The timing of the spreader is factory-set by referring to
the previous procedure (see 7-2).
Adjust according to the thread to be used or other
conditions.
To make this adjustment,
1. Remove the top arm cover.
2. Loosen two screws for looper eccentric A on the
upper shaft.
3. Shift alignment mark C front or back while
referring to alignment mark B.
To advance the timing of the spreader to the needle, shift mark C in the direction of D.
To delay the timing of the spreader to the needle, shift mark C in the direction of E.
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8
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FEED DOGS & STITCH LENGTH
8888----1 Feed dog height & tilt
1 Feed dog height & tilt
1 Feed dog height & tilt
1 Feed dog height & tilt
■
Height
When the feed dogs are at the top of their stroke, the
feed dog teeth should be parallel with and 1.0~1.2mm
above the top surface of the needle plate.
To make this adjustment, loosen screw A and move the
main and differential feed dogs up or down.
■
Tilt
Remove the cover from the rear side of the bed.
Loosen screw D from hole C with a 2.5mm hex.
Wrench.
When the feed dogs are at their top of their stroke, the
feed dogs should be parallel with the top surface of the
needle plate. Adjust by turning eccentric pin E with a
screwdriver.
< Note >
When turning the eccentric pin, tighten screw D with the
pin slightly touching feed bar B while checking that the
shaft is not shifted to the left.
