Check the threading diagrams to be sure that the machine is threaded correctly. See
Machine Threading Section.
The thread must have proper pre-tension before entering the tension disks to prevent
it from slipping out of the disks. See the machine threading section for information on
how to thread the 3-hole guide directly above the tensioner to create the proper pre-
tension on your thread type.
The bottom of the check spring’s “u-shaped curve” on the tension control unit
should be at approximately 10 o’clock in its resting position, with only a light to
moderate amount of tension on the spring. Refer to Tension Control
Maintenance section for adjustment.
Check spring position at
‘rest’
3-Hole thread guide
above tension control
To Next Page
Loading...