Cal-Royal CR9000 Installation And Programming Instructions page 5

A. Unpack the Lock
B. Determine Handing of Door and Change Lever Orientation Accordingly
1. Remove the handle & lock body.
1) Insert key, rotate the key 90 degrees clockwise.
2) Depress retainer with tool provided.
3) Slide the lever off the lock.
4) Slice the lockbody off the escutcheon.