Bad Pella cranks from 1992

A home owner from bloomfield michigan says:
These windows by pella were installed in 1992.These cranks are to open casement windows and often become loose or the treads become non functional.We have 3 or 4 such bad cranks , needing replacement or repair.
User submitted a photo of a window operator.
Profile picture of Tom
Tom from SWISCO responded:
Good morning, and thanks for posting! Before I can offer an applicable replacement for this operator, could I see a few pictures of it as fully removed from the window? I'd have to see the entire operator unit before I can find something to replace it. I would also like to know its arm dimensions. Let me know!
A quick learner from michigan says:
Thanks for your response.I cannot take out the crank from the window.I did take another photo with window open, showing the crank and its arms.The window width is 28"&1/4".I hope you can help or tell me which local handy man can handle it.Thanks.
User submitted a photo of a window operator.
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
Thank you. Take a look at our 39-015 Roto Gear Window Crank and compare it to your hardware and let me know what you think!
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