Adjusting The Bobbin Thread Tension; Opening Amount Of The Pre-Tension Disk; Opening Amount Of The Tension Disk - JUKI HZL-E61 Service Manual

5-1-9 Adjusting the bobbin thread tension

Remove the throat plate.
How to adjust 1. Position the bobbin case and the tension gauge as illustrated and adjust the adjusting

5-1-10 Opening amount of the pre-tension disk

Remove the face cover and the front panel.
How to adjust 1. Adjust the adjusting screw for releasing the pre-tension disk so that the pre-tension

5-1-11 Opening amount of the tension disk

Remove the face cover and the front panel.
How to adjust 1. Turn the adjusting screw in the thread
screw (4) so that the tension is 0.1862±0.0098 [N] (19g±1g) with SHAPPE
#60 thread.
Bobbin case
Tension gauge
disk opens approximately 1 mm when the presser lifting lever is raised.
In addition, the tension of the pre-tension is a fixed type and cannot be adjusted.
tension disk floating plate and adjust
so that the clearance between tension
disk (A) and tension disk (B) is 1 mm
when the thread tension dial is set to
the maximum and the presser lifting
lever is raised.
(4)
Adjusting screw
for releasing the
pre-tension disk
Adjusting
screw
Disk A
- 1 6 - - 1 6 - - 1 6 - - 1 6 - - 1 6 -
Bobbin thread should not come
in contact with bobbin case.
Tension gauge
1 mm
Thread tension
disk floating plate
Disk B
1 mm