JUKI J-350QVP User Manual

– 18 –
Adjusting the thread tension
As a measure of the thread tension applied by the bobbin case, when
a bobbin (Cotton TEX40) is loaded in the bobbin case, the bobbin
should slowly drop by its own weight as illustrated in the gure.
* Adjust the needle thread tension in accordance with the bobbin
thread tension.
* The bobbin case for the J-350QVP is an exclusive JUKI part. Please
consult the JUKI dealers when you purchase it.
·
Proper thread tension
Improperly adjusted thread tension may cause
puckering on materials, inferior stitches, or
thread breakage.
Center of the
material
Needle thread
Bobbin thread
Bobbin thread
Needle thread
Bobbin thread
The needle thread tension is too low
The needle thread tension is too high
Thread tension dial
Increase the needle
thread tension.
Decrease the needle
thread tension.
· Adjusting the bobbin case
Needle thread
Tension adjusting
screw
Increase
Decrease
CAUTION
Turn OFF the power switch before taking out the bobbin case or replacing the needle.

JUKI J-350QVP Specifications

General

Brand	JUKI
Model	J-350QVP
Category	Sewing Machine
Language	English