—
5
—
7.Thread tension
1
)
Adjusting the bobbin thread tension
Turn tension screw, clockwise to increase the bobbin thread tension, or counter clockwise to
decrease it.
2
)
Adjusting the needle thread tension
·
Needle thread tension should be adjusted in reference to bobbin thread tension.
·
Turn tension nut clockwise to increase the needle thread tension, or counter clocking to decrease it.
·
Needle thread tension can be also adjusted for special fabric and thread by changing intensity and
movable range of slack thread adjusting spring.
8.Thread take-upspring
1
)
To change the stroke of thread take-up spring
·
Loosen screw
“
4
”
in the stopper, and
move stopper
“
3
”
to the right or left.
·
Move the stopper to the right to
increase the stroke of the thread
take-up spring, or to the left to
decrease it.
2
)
To change the tension of the thread take-up spring
Loosen nut
“
2
”
and screw
“
5”
.Turn spring shaft
“
1
”
counter clockwise to increase the tension
of the spring, or clockwise to decrease it. Fit a screwdriver in the spring shaft and turn it until the
desired tension is provided.
9.Adjusting the stitch length
Turn stitch length dial counter-clockwise
to bring the desired value to the top of the dial so
that the value is aligned with the pin.
Reverse feed stitching
1
)
The machine performs reverse feed stitching as
long as the lever is held depressed.
2
)
The moment you release the lever, the machine
resumed the normal stitching mode.
Summary of Contents for 2618-1B
Page 11: ... 9 A ARM BED AND ITS ACCESSORIES ...
Page 14: ... 12 B THREAD TENSION REGULATOR MECHINISM ...
Page 17: ... 15 C ARM SHAFT MECHANISM ...
Page 19: ... 17 D NEEDLE BAR THREAD TAKE UP LEVER MECHANISM ...
Page 21: ... 19 E PREAAER FOOT MECHANISM ...
Page 24: ... 22 F STITCH REGULATOR MECHANISM ...
Page 27: ... 25 G FEEDING AND FEED LIFTING ROTATING HOOK SHAFT MECHANISM ...
Page 29: ... 27 H HOOK SADDLE MECHANISM 21G01 034 Needle Plate Attaching Screw H 29 ...
Page 31: ... 29 I ACCESSORIES ...