Anderson Casement Window Crank replacement c.1983

A quick learner from Hingham,MA says:
I have a large Casement window circa 1983 that needs all 4 crank, handle mechanisms replaced. Currently none, of the 4 casement windows can be opened using the cranks for various reasons; whether it's the handle missing, or the crank is cracked, or gears are stripped inside. I would like help in determining the correct replacement parts. Thank you!

The two windows on the left hand side open to the left and the two windows in the right hand side open to the right.

User submitted photo of Andersen window crank.
Profile picture of Mike
Mike from SWISCO responded:
We offer several Andersen window operators.

For example, the 39-094 and 39-095, 39-146 and 39-147, 39-150 and 39-151. If you're uncertain about which one will work as a replacement, you may have to upload a few more detailed photos with measurements of the entire operator so we can take a look.
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