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5.Proper operation
14
AZ8600SD
Run the thread correctly as shown in the thread-
ing figure attached inside the front cover.
Threading
Before threading, ALWAYS turn the motor switch OFF
and check that the motor has already stopped.
Improper threading can cause thread breakage, skip
stitch, and uneven stitch.
Fig. 5-6
⑥
Tighten
Loosen
Open the cloth plate
ÁÔÔÅÎÔÉÏÎ
ÃÁÕÔÉÏÎ
5.3 Adjusting thread tension
Adjust the thread tension with the thread ten-
sion spring caps ① - ⑥ depending on the type of
material, the type of thread, seam width, stitch
length, and other sewing conditions.
● To tighten the thread tension, turn caps
clockwise.
● To loosen the thread tension, turn caps coun
-
terclockwise.
Fig. 5-4 AZ8600SD
Fig. 5-5 AZ8620SD
Table 5
Tighten
Loosen
①
②
③
④
⑤
③
②
①
Loosen
Tighten
④
Model
Thread
AZ8600SD
2-needle
safety stitch
AZ8620SD
3-needle
safety stitch
Left needle thread
①
①
Right needle thread
②
Double chain
needle thread
②
③
Upper looper thread
③
④
Lower looper thread
④
⑤
Double chain
looper thread
⑥
⑥