Canon W7250 - Manual (Page 27)

2 Select a Location for the Printer
15
1-15
3
Insert the center arms of the output stacker into the center grooves of
the support brackets on the left and right side. Insert the arms
completely into the grooves so the arms are diagonal.
4
Insert the longest arms of the output stacker into the front grooves of
the support brackets on the left and right side. Insert the arms
completely into the grooves so the arms are level.