JUKI AMB-289, Engineer'S Manual

Page: 79 / 177

– 75 –
[Waiting position]
1. Loosen screws
and close the clearance with stopper so that
the dimension between the edge of fixed knife link and the groove
end of throat plate is 13 to 14 mm. Then fix screws .
[Thread trimming position]
1. Adjust the clearance between the blade point of moving knife
and
the right end of the slot of throat plate is 3 to 5 mm in the state that air
only is ON (solenoid valve No. 14), loosen screws
, actuate the
cylinder, and fix screws in the state that the clearance is closed.
2. After the adjustment, check that moving knife link smoothly moves.
* When the work is completed, do not forget to perform the release of
lock of the solenoid valve.
1. Bend thread separation nail using a screwdriver or the like and
adjust so that a clearance of 0.5 to 0.7 mm should be provided be-
tween thread separation nail
and looper .
o When dimension value is smaller
than 13 mm, knife cannot wait and
sewing trouble will be caused.
o When dimension value is larger
than 5 mm, knives do not engage
with each other and thread
trimming trouble will be caused.
Adjustment Procedure Results of Improper Adjustment