JUKI MB-373 Manual page 25

Adjustment Procedures
™ Make adjustment by loosening screw 1 of the tension lever.
At the time of starting, make adjustment by loosening screw
2 of the tension guide.
2
™ Make adjustment by loosening screw 1 of the speed slowing
lever.
1
25
− −
Results of Improper Adjustment
™ If the clearance is too large, thread-
breakage will occur.
™ If the clearance is too small,
tightness of stitch will be weakened.
™ If the clearance is too large, the start
of the brake will be delayed and the
stop motion cam may bound or
produce a loud noise at the time of
stop-motion.
™ If the clearance is too small, the
brake will start too early resulting in
hindering the stop-motion.