Adjustment Of Needle Thread Path - JUKI MS-3580 Serie Manual De Instrucciones

11. Adjustment of needle thread path

WARNING :
Perform the work after turning OFF the power to prevent accidents caused by the abrupt start of the
sewing machine.
(1) Adjustment of needle thread path
The needle thread adjusting thread path 1 is installed just under the needle thread guide 3 so that there
is no sag of the needle thread that passes through the lever thread path 2 from the needle thread adjusting thread path
1 when the needle bar is positioned at the upper dead point.
(2) Height of needle thread adjusting path
The standard dimension from point "A" under the hole in needle thread path guide 3 to point "B" under the hole in needle
thread adjusting path 1 is 27 mm.
To especially tense the needle thread, adjust the distance from point "C" under the hole in needle thread path guide 3 to
point "D" under the hole in needle thread adjusting path 1 to approximately 36 mm.
(3) Height of needle thread support adjust plate
When the needle bar rests at its lower dead point, the standard dimension from the upper end "F" of needle thread lever
thread path 2 to the upper end "E" of needle thread support adjust plate 4 is 1.6 mm.
Needle bar at the
upper dead point
4
Standard dimension
A
27mm
3
1
B
1
2
7
Needle thread rocking
thread take-up lever
− 40 −
Standard dimension for
tightening the needle thread
C
3
D
1
3
5
6
Needle bar at the
lower dead point
4
E
1.6mm
F
2
36mm