5-1-9 Adjusting the bobbin thread tension
Remove the throat plate.
1. Position the bobbin case and the tension gauge as illustrated and adjust the adjusting
screw [7] so that the tension is 0.1862±0.0098 [N] (19g±1g) with SHAPPE
#60 thread.
How to adjust
Bobbin case
Bobbin thread should not come
in contact with bobbin case.
Tension gauge
Tension gauge
5-1-10 Opening amount of the pre-tension disk
Remove the face cover and the front panel.
1. Adjust the adjusting screw for releasing the pre-tension disk so that the pre-tension
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.
How to adjust
5-1-11 Opening amount of the tension disk
Remove the face cover and the front panel.
1. Turn the adjusting screw in the thread
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.
How to adjust
Adjusting
screw
Disk A
Disk B
- 1 6 -
- 1 6 -
- 1 6 -
- 1 6 -
- 1 6 -
[7]
1 mm
Adjusting screw
for releasing the
pre-tension disk
1 mm
Thread tension
disk floating plate
Summary of Contents for HZL-E70
Page 1: ...SERVICE MANUAL HZL E70 COMPUTER SEWING MACHINE ...
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