2. Facing the back of the printer, release the right sprocket unit by pulling the sprocket lock lever
up.
3. Slide the right sprocket to match the width of your paper, but do not lock it.
Note:
The left sprocket unit is fixed in place and cannot be adjusted.
4. Slide the center paper support halfway between the two sprockets.
GP-C830/GP-M830/GP-C831/GP-M831/GP-C832/GP-M832 User’s Guide
Paper Handling
17