CertainTeed Bay Window Crank Mechanism

A home owner from Chicago says:
I can open certainteed bay window but cannot close it... Looks like a portion of the cranking mechanism is missing
(See attached).. The marking on the mechanism is Truth

Can you provide the necessary part(s)
To get this working ? Do u know of anyone in Chicago area who could so the repair?

User submitted photos of a window operator.
Profile picture of Tom
Tom from SWISCO responded:
Hey, Phil. We can help, but you will need a new operator entirely. Would you be able to remove your operator from the window so that we can see the whole thing? Once I see it, I can recommend a replacement.

I'm afraid I am not familiar with your area.
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