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5. Proper operation
10
CZ8000
5.3 Adjusting thread tension
Adjust the thread tension with the thread tension spring
caps ① - ④ according to the type of fabric, the type of
thread, seam width, stitch length, and other sewing condi-
tions.
● To tighten the thread tension, turn caps clockwise.
● To loosen the thread tension, turn caps counterclock-
wise.
Fig. 5-4
Threading
Table 5
③
②
①
Loosen
Tighten
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.
Threading correctly by referring to the threading figure
which is attached on the back of the front cover.
ATTENTION
④
Model
Thread
CZ8003
single needle
overlock
CZ8020
2-needle
overlock
Left needle
①
①
Right needle
②
Upper looper
thread
③
③
Lower looper
thread
④
④