JUKI MO-2800 - Page 29

28
Practical Sewing - Overlock
Thread tension for roll hemming (roll hemming
and narrow overlocking)
●
Roll hemming thread tension lever
Raise the roll hemming thread tension lever A up to per-
form roll hemming without adjusting the thread tension
dial.
Raise the roll hemming thread tension lever up to obtain
the thread tension that is suited to roll hemming.
Be sure to return the lever to its home position after you
have nished roll hemming.
●
Thread tension reference table
Refer to the following reference table for the thread tension.
The thread tension slightly di󰀨ers with the type of material and thread to be used.
Use thin spun thread up to No.90 (Tex No. 18) for roll hemming.
Use woolly nylon thread only as the upper looper thread.
A
For roll hemming For narrow overlocking
Thread tension dial
Thread
Right
needle
thread
Upper
Looper
thread
Lower
Looper
thread
Right
needle
thread
Upper
Looper
thread
Lower
Looper
thread
Polyester spun
Tex No.18
(Japanese system No:90)
3-5 3-4 3-5 (*) 3-6 4-6 3-5 (*)
Polyester lament
Tex No.12
(Japanese system No:80)
3-5 3-4 3-5 (*) 4-6 4-5 3-5 (*)
Woolly nylon
Tex No.26
(Only use for Upper Looper )
- 3-4 - - 3-4 -
NOTE: The values marked with (*) are approximate guides for the case of using the roll hemming thread tension lever.
If you adjust the thread tension without using the lever, it will be necessary to increase the thread tension near
to the maximum value.