Upper Looper Adjustment - Baby Lock BLE1 Service Manual

5 . UPPER LOOPER ADJUSTMENT

NOTE: After adjusting upper looper, you are required to
check JET AIR THREADING.
a) Replacement of upper looper
Slide the pipe rubber, and loosen the screw.
Replace new lower looper, slightly tighten the screw.
The distance from looper from shaft is approx. 0.8mm,
and firmly tighten the screw.
Replace the pipe rubber.
b) Upper looper position
Turn the handwheel, and bring upper looper to
the far left. (top position)
Loosen looper arm screw ,and adjust upper looper
to the correct position.
c) Correspondence amount of lower and upper looper
Turn hand wheel and bring the loopers to the
cross position as shown.
Make sure upper looper on the overlapping amount
8.3mm between both tip of loopers.
d) The distance between upper looper and lower looper
Turn hand wheel and bring the loopers to the
cross center position as shown.
Loosen looper fixing screw, and adjust upper looper
to the correct position.
d) The distance between upper looper and needles
Turn hand wheel and bring the loopers to the
far left (top position).
Make sure upper looper do not touch needles strongly,
and the distance between upper looper and needles
is not big.
Repeat a) to e) until you get exact position.
Looper arm
screw for adjusting position
#11(#75)Needle
8.5
#14(#90)Needle
8.6
4
Upper looper
fixing screw
Right
Needle
+
0.1 mm
+
0.1 mm
Upper looper
position
Max. 8.5
0
Needles
+0.3
0.8