Tension Disk Opening Amount; Base Tension Opening Amount - JUKI HZL-X Series Service Manual

6-10-3 Tension disk opening amount

○ Remove the face cover, the thread tension cover and the
spool cover.
Adjustment procedure
1. Maximize the tension with the thread tension ad-
justment dial. Raise the presser foot lifting lever.
2. Adjust the clearance between tension disks (A)
and (B) to 1 mm by turning the thread tension float
adjusting screw.

6-10-4 Base tension opening amount

○ Remove the face cover, the thread tension cover and the spool cover.
Adjustment procedure
1. Raise the presser foot lifting lever.
2. Adjust the base tension opening amount to 1 mm by turning the base tension adjusting screw.
Base tension adjusting screw
* The pretension disk float adjusting screw and the tension disk float adjusting screw can be turned
without loosening the nuts.
Pretension disk
and tension disk
float adjusting
screw
– 20 –
Disk A
1 mm
Pretension disk
float adjusting
screw
Tension disk float
adjusting screw
Disk B