CONTENTS
5.12 Raising the upper feed roller (VE2740PR-8F)
20
5.13
Pressure of the upper feed roller (
VE2740PR-8F
)
20
5.14 SP device 21
5.15 Cleaning the machine 22
6. Adjustments 23
6.1 Needle thread tension 23
6.2 Top cover thread tension 24
6.3 Looper thread tension 25
6.3.1 Looper thread tension 25
6.3.2 Position of the looper thread take-up 25
6.4 Relation between the needle and the spreader 26
6.4.1 Spreader 26
6.4.2 Top cover thread guide 27
6.4.3 Top cover thread eyelet 27
6.5 Distance between the needle and the looper 28
6.6 Using the timing gauge 28
6.7 Height of the needle 29
6.8 Back-and-forth position of the needle and the looper 29
6.9 Needle and needle guard 30
6.9.1 Needle guard (rear) 30
6.9.2 Needle guard (front) 31
6.10 Height of the feed dog 32
6.11 Removing the presser foot and presser foot lift 33
6.12 Toeing up and down the presser foot 34
6.13 Adjusting the walking presser foot (VE2711-8F-WF1) 35
6.14 Feeding amount of the puller (VE2740PR-8F) 36
6.15 Pressure of the clutch tension spring (VE2740PR-8F)
36
7. Specifications 37
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.
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