Epson 1170 - Manual (Page 44)

Using Continuous Paper
4. Slide the left sprocket to approximately 12 mm (0.5 inch) from
the far left position (use the alignment marks on the printer
case). Push the lever back to lock it in place. Then slide the
right sprocket unit to match the width of your paper, but do
not lock it. Move the paper support so it is midway between
the sprocket units.
5. Make sure your paper has a clean, straight loading edge. Open
the sprocket covers and fit the holes of the paper over the
sprocket pins.
2-16 Paper Handling