JUKI MOL-254 Engineer's Manual page 150

Lower
plate
Clearance
Provide minimum clearances.
To come in close
contact with each other
Clearance
−
4. When installing the cloth presser base lid after
having replaced the cloth presser foot, install the
lid after positioning so that the cloth presser foot
comes in close contact with the lower plate.
5. Fix the up/down cylinder stopper pin. At this time,
check that the flat portion of the pin is aligned with
screw .
Fix the pin while providing minimum clearances
between the cylinder and the cylinder knuckle so
that there is no torque when the cylinder moves up
or down.
143
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