GBC StreamPunch Ultra Service Manual page 223

10. Rotate the Stop collar.
If the Punch Cam needs to stop earlier, rotate the Stop Collar
Clockwise (when viewed from the rear of the machine).
If the Punch Cam needs to stop later, rotate the Stop Collar Counter-
clockwise (when viewed from the rear side).
In this instance the cam needs to stop earlier, therefore rotate the
Stop Collar Clockwise (when viewed from the rear side). This is done
by manually lowering the pawl and freeing the Stop collar to rotate.
GBC StreamPunch Ultra/Ultra MP
11. Slide the Stop collar back to its position and release the pawl.
12. Manually rotate the pulley in the counter-clockwise direction by
holding the pulley (viewed from rear side) to complete a punch cycle.
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Adjustments/Repairs