Siruba DL3880 Series - Thread Control Adjustments; Looper Thread Take-up Cam; Thread-Amount Adjusting Plate

1/4"(6.4mm).( 30)
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1/8" 1/2" . ,
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26 Replacement of throat plate (Fig.30)
The standard size of the throat plate in parts book, which is stipulated by the
manufactory, is 1/4",equivalent to 6.4mm.(Fig.30)
The replacement of the following components is usually needed at the time when
changing the gauge of double-row thread stitch.
1.
Needle clamp 2.Hinged foot 3.Throat plate 4.Feed dog 5.Rear moving
needle guard 6. curler
The left and right loopers within the range of the sizes of 1/8" to 1/2" are
interchangeable.
In addition to the aforesaid, the replacement of slide plate and cam cover shall be made
when the width of throat plate is on the increase.
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(Low).
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27 maintenance of the machine.
The following shall be adhered to in order to keep the machine in good working
. 15 .