Mitsubishi LS2-190 - Hook, Feed Dog, Bobbin Case and Bobbin; Adjustment of Feed Dog Inclination

4.9 Hook, feed dog, bobbin case and bobbin ®'
l) Use the undertrimmer hook which has the bobbin
thread guide slit (S) as shown in Fig. 22.
2) Use the feed dog for LS2-190 ap
plication.
Fig. 22
3) The bobbin case should have a spring ® for prevention of racing
(Pig. 23)
When bobbin thread tension is adjusted
by the bobbin case, adjust the tension
a little smaller than the tension in
the ordinary single-needle lockstitch
machine, considering the pressure of the
spring for prevention of racing.
4) Use a furnished bobbin.
Fig. 23
When an aluminum bobbin is used, wind thread on the bobbin
with least tension as possible to revent deformation due to
wound thread tension.
4.10 Adjustment of feed dog inclination
4.10.1 Inclination of th=: feed dog should be adjusted depending on the
given fabrics and sewing conditions .
Adjustment can be done as follows.
From the library of: Superior Sewing Machine & Supply LLC