What parts do I need

A home owner from Pickering says:
These are pictures of the window open but the crank just turns as if the gear is stripped. The handle part grips fine. I need to know what to order and how to get that cover that the handle attaches to off.

User submitted photos of a window operator.
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
Hey, Dan. Look at our 39-253L and 39-253R and see if these are the same as your current hardware. You may also want to consider our 39-529 track and 39-205 folding handle.
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