Adjustment Of The Thread Tension - HIGHLEAD HLK-03 Instruction Manual

6-3 Adjustment of the thread tension

The thread tension between the upper and bosom thread should be balanced in the best condition．
When the upper thread tension is well balanced with the bobbin thread tension，both threads are interlocked
along the centerline of fabric layers as shown on the below figures．
NOTE Normally weaker bobbin thread tension brings better sewing quality．
So it is prefer to set bobbin thread tension first and then set upper thread tension．
(1) Bobbin thread tension
Adjust the bobbin thread tension with the thread tension adjusting screw
thread tension becomes loose if turn the thread tension adjusting screw
thread tension becomes tight if turn it to the clockwise．
(2) Upper thread tension
Adjust the upper thread tension based on the bobbin thread tension．For this adjustment，turn the thread
tension adjusting nut
the clockwise，and the upper thread tension becomes loose if turns it to the counter clock wise．
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3 ． The upper tread tension becomes tight if turn the thread tension adjusting nut
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2 to the counter clockwise，and the
13
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2 on the bobbin case
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1 ．The
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3 to