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Adjustment Procedures
1. Turn the alternate vertical dial to adjust the scale "1" to the
convex section on the top cover.
2. Loosen setscrew 1 in the alternate vertical dial and remove
the alternate vertical dial.
At this time, be careful that a pin and a spring are in the hole of
section A.
3. Loosen installing screws 2 of the detection switch of the amount
of alternate vertical movement and adjust the distance from
the inner diameter of the bushing to the edge of the switch
body to 8±0.1 mm. Then tighten installing screws 2 of the
detection switch of the amount of alternate vertical movement.
4. Adjust the scale "1" to the convex section on the top cover,
place the pin and the spring in the hole of section A, install the
alternate vertical dial and tighten setscrew 1 in the alternate
vertical dial.
(Caution) When the position of the detection switch of the
amount of alternate vertical movement is changed, check
whether the relation between the alternate vertical dial and
the sewing speed is normal.
Results of Improper Adjustment
™ Sewing speed may not change
even when turning the alternate
vertical dial.
– 41 –
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