1. ·usti
1.1. Lateral adjustment
of
the feed dog:
Adjust position
of
feed rockshaft endwise until feed dog is centered in feed slot
of
the needle plate.
1.2. Lengthwise adjustment
of
feed dog:
Adjust feed rock shaft in driving crank so that the feed dog will not strike the front
or back end
of
the feed slot when the machine is set for its longest stitch, both
forward and backward.
1.3. Adjust the feed dog so that its right and left tooth rows emerge from the feed slots in
the needle plate simultaneously.
1.4. Vertical adjustment
of
the feed dog:
2.
When at its highest position, the feed dog should show a full tooth above the needle
plate. Special sewing conditions may necessitate a slight modification
of
this
setting.
If
adjustment is required, rotate the crank on the feed lifting shaft, as
appropriate.
the needle
needle hole.
2.1. The machine normally uses system 134 needles. Certain classes or subclass
machines use different needle systems, which are indicated in the respective needle
and thread chart.
2.2. Check straightness
of
needle.
2.3 Check (with your fingernail) to see that needlepoint is not damaged.
2.4 Check position
of
needle in needle holder:
2.4.1. Needle must be pushed into needle holder as far as
it will go.
2.4.2. Long groove
of
needle should be on the opposite side from the sewing hook; needle
eye should be positioned at right angles to plane
of
hook rotation.
2.4.3 The needle holder should hole the needle securely.
2.4.4 The needle should be centered in the needle hole. Adjustment is made by turning
the rear crank on the needle bar frame shaft (below the eccentrics).
2.4.5 The needle should descend in a straight line with the needle bar motion.
If
it does
not, check to see whether the needle holder or the needle bar is bent, and straighten
the bent part.
2
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