US Cutter LaserPoint User Manual page 17

Loosen the locking knob on
the carriage arm.
It may be easier to install the pen (or blade) carriage after the lid on the LaserPoint has been raised allowing more
working room.
To Replace the pen or spring inside of the Pen Carriage:
Unscrew the top cap from the Pen carriage.
Drop the pen attachment
into place.
Tighten the locking knob on
the carriage arm.
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