Oce 9800 User Manual page 52

[48] Knob to adjust the folding width in the punch unit
Loosen the knurled screw and place the plate according to the folding length
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(see figure 49).
[49] Knurled nut to adjust the folding length in the punch unit
Tighten the knurled nut.
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52 Océ 9800 Printer User Manual