I've never been able to get a clip removal tool to work well on these. The
opening in the retaining clip faces the knob on the handle. I usually turn
the crank so that the knob is up, put a flat-blade screwdriver between the
crank and the plastic washer on the top side, and then pry toward the door
on the washer while turning the crank. This will push the clip off the
handle as you turn it.