Epson Stylus Pro 7450 User Manual page 267

3. Hold the cutter unit, and hook its left side to the left square
hole on the platen.
4. Similarly, hook the other side to the right square hole on the
platen.
5. Secure the cutter unit with the four screws you removed in
step 2. Use the second and third holes from the top.
Maintenance and Transportation
267