GBC StreamPunch Ultra Service Manual page 219

ADJ 1.4.4 179T belt tension adjustment
Use this procedure to adjust the Belt tension of 134T timing belt.
1. Disconnect the Power Cord.
2. Do ARP 1.6 to remove the Rear Cover.
3. Loosen the the tensioner.
4. Adjust the belt tension such that there is a deflection of 4~6mm.
GBC StreamPunch Ultra/Ultra MP
5. Tighten the tensioner
6. Do ARP 1.6 to install the Rear Cover.
7. Connect the Power cord.
02-03-2017
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Adjustments/Repairs