JUKI MOL-254 Engineer's Manual page 111

Adjustment Procedures
1. Remove the chip cover.
2. Turn pressure adjustment screw
placed under loop feed base
loop feed roller .
Lift the rotary shaft of loop feed roller
the arrow as shown in the figure on the left and adjust the
pressure to 34.3 to 44.1 N.
3. Turning the screw clockwise will increase the pressure,
and turning it counterclockwise will decrease the pressure.
4. Attach the chip cover.
of the loop feed roller
and adjust the pressure of
in the direction of
104
− −
Results of Improper Adjustment
○ If the pressure is higher as
against the belt loop, the belt
loop may be damaged by the
feed teeth of the belt loop feed
roller.
○ If the pressure is lower as
against the belt loop, it is not
possible to securely feed the belt
loop.
Especially, if the pressure is
excessively low, the process of
overlapped section (splice
section) may not be securely
conducted since it is conducted
by the loop feed roller only.