Adjustment Of Tension Disk FL Oating - JUKI MS-3580 Serie Manual De Instrucciones

13. Adjustment of tension disk fl oating
WARNING :
Perform the work after turning OFF the power to prevent accidents caused by the abrupt start of the
sewing machine.
2
4
6.5mm
3
8
If proper positioning is not secured for the disk fl oating pin 3 , the needle thread and/or the looper
thread cannot be pulled out when this action is needed.
(1) Adjustment of tension disk fl oating
The standard positioning is such that tip of the disk fl oating
pin 3 comes in contact with the upper tension disk 4
when the upper feed roller 1 rises by 1.0mm above the
upper face of the throat plate 2 and that the upper tension
1
disk 4 keeps fl oating when the upper feed roller 1 rises
further.
1.0mm
The standard size is 6.5mm between the tip of the disk
fl oating pin 3 and the upper face of the thread guide 5 .
Top surface
of the throat
plate
(2) Adjustment of tension disk fl oating
1) Insert a screwdriver in the groove of the tension
5
fl oating shaft 8 and loosen the setscrew 7 of the
lift lever 6 . Then, turn the tension fl oating shaft 8
clockwise.
7
Adjust height of the disk fl oating pin 3 to 6.5mm and
2)
tighten the setscrew 7 .
6
Groove
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