CONTENTS
Attention
The parts used for this product are subject to change without notice. If such a change is made, any part
of the contents and illustrations of this instruction manual may not conform to this product.
In preparing the instruction manual, we have made our best efforts for making it free of any error or
omission. If any error or omission should yet be found, it might not be rectified immediately.
Attention
◇This instruction manual is designed mainly for technicians, but it is advisable that also operators read
the instructions with mark to use the machine properly.
◇The numbers in lower left corners of figures are figure numbers. We use them in texts as needed for
your reference.
6. Adjustments 24
6.1 Needle thread tension 24
6.2 Top cover thread tension 25
6.3 Looper thread tension 26
6.4 Removing presser foot and presser foot lift 27
6.5 Looper 28
6.6 Height of needle bar 29
6.7 Front-and-rear position of needle and looper 30
6.8 Needle and needle guard 31
6.9 Height of feed dog 32
6.10 Needle and spreader 32
6.11 Folder (VF2403, 2503, 2404, 2504) 34
6.12 Metering device (VF2404, 2504) 35
7. Specifications 37
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