porch window crank

A quick learner from nh says:
the crank shaft is turning but something is "missing" to turn the other shaft to close the windows.
porch window crank
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Dave Sr. from SWISCO responded:
I'm afraid that I can't get a good look at your center gear operator, but take a look at our 39-076. This could be the part you need to replace. Carefully compare it to yours and see what you think.
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