14
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10
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STITCH FORMATION
10
10
10
10----1 Position of the needle thread guides
1 Position of the needle thread guides
1 Position of the needle thread guides
1 Position of the needle thread guides
The distance from the center of the eyelet of the
needle thread guide to that of the set screw should
be approximately 17.5mm (see the illustration).
Adjust the height of the thread guides by loosening
screws A and moving each thread guide up or down
(refer to the distances shown in the illustration).
If the stitch formation cannot be changed extremely
by adjusting the height of the thread guides because
of the thread to be used, unravel the thread after
test sewing and adjust the height of the thread
guides while checking the tension of the needle
thread.
10
10
10
10----2 Position of the thread guide on the
2 Position of the thread guide on the
2 Position of the thread guide on the
2 Position of the thread guide on the needle
needle
needle
needle thread take
thread take
thread take
thread take----up
up
up
up
When the needle bar is at the bottom of its stroke,
needle thread take-up bracket A should be level and
the distance from the center of the shaft to the
thread guide of needle thread take-up B should be
75mm.
To make this adjustment, loosen screws C and D.
To tighten the needle thread, move needle thread
take-up to Y.
To loosen the needle thread, move needle thread
take-up to X.
10
10
10
10----3 Timing of the needle thread take
3 Timing of the needle thread take
3 Timing of the needle thread take
3 Timing of the needle thread take----up
up
up
up
The timing of the needle thread take-up in relation
to the up-and-down movement of the needles can be
adjusted. This timing is factory-set to synchronize
with the up-and-down movement of the needle bar.
< Note >
The rod ball is factory-set at 5.5mm from the rear end
of the shaft. To make the needle thread loop small,
move the rod ball to the front.
To make the needle thread loop large, move the rod
ball to the back. Remove the rubber top plug.
Loosen the screw of (A) with a 5mm wrench.
Then move the rod ball to the front or back.
