JUKI MOL-254 Engineer's Manual page 109

Adjustment Procedures
1. Remove the chip cover.
2. Turn height adjusting screw
under loop feed base
between loop feed roller
value, 0.3 to 0.5 mm.
3. Turning the screw clockwise will increase the clearance,
and turning it counterclockwise will decrease the
clearance.
4. Attach the chip cover.
of the loop feed roller placed
and adjust the clearance provided
and roller to the standard
102
− −
Results of Improper Adjustment
○ If the clearance is smaller as
against the belt loop, the belt
loop may be damaged by the
feed teeth of the roller.
○ If the clearance is larger as
against the belt loop, it is not
possible to securely feed the belt
loop.
Especially, the process of
overlapped section (splice
section) may not be securely
conducted since it is conducted
by the loop feed roller only.