ZOJE ZJ927 Series, Instruction Manual

Page: 30 / 100

25
Needle and looper timing adjustment
Looper forward travel Looper backward travel
Make an adjustment so that,when needles are
down lowest loopers reach the end of their
backward travel and the distance from the ne-
edle center to the looper tip is 2.7 to 2.9 mm
.
Remove the presser foot,needle plate and
feed dogs.
Remove the two screws ,and then open
the belt cover plate .
Turn the pulley toward yourself until looper
reach the end of their backward travel.
.
Loosen cap screw ,and then loosen two s-
et screws on lower belt wheel .
Turn the pulley toward yourself until need-
les come down to the lowest position.
Tighten two set screws securely,and then
tighten cap screw .
Loosen set screw ,move looper holder
in the arrow direction until the distance be-
tween the needle center and the looper tip
is 2.7 to 2.9 mm,and retighten set screw s-
ecurely.
Make sure that the looper thread eyes match
the needle eyes in the forward and backward
travels of the loopers.
Close the belt cover plate ,and then tight-
en the two screws .
Install the presser foot,needle plate and fe-
ed dogs.
1
2
3
4
5
7
8
6
9
1
1
2
2
2
3
4
3
4
2
2
7
7
6
6
5
5
1
1
7
5
5
7
8
9
9 8
8
4
4
3
3