Adjustment Of Upper Thread Tension; Adjustment Of Lower Thread Tension; Adjustment Of Remaining Needle Thread Length After Thread Trimming - HIGHLEAD GC1918 -MDZ Instruction Manual

7) Adjusting of lower thread tension
(1) Lower thread tension can be adjusted by screw (A).
6) Adjusting of upper thread tension
(1) Upper thread tension can be adjusted by thread
tension nut.
(2) Upper thread is to be adjusted according to the
lower thread tension.
(3) For special fabric sewing with special thread, the
desired tension can be obtained by adjusting the
strength and operating range of thread take-up
spring.
(2) In the case of cotton thread #60, the thread
tension can be checked as the following. Hold the end
of pulled out thread and if the bobbin case fall slowly,
the tension is proper.
8) Adjustment of remaining needle thread
length after thread trimming
(1) Turn the pretension nut ① and adjust.
(2) When turned clockwise, the length of thread left
in the needle will be short.
When turned counterclockwise, the length of the
thread left in the needle will be long.
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