worm drive keeps coming out

A quick learner from Wisconsin says:
I have casement windows and my worm drive keeps coming out I need the part that holds the worm drive in place. I dont want to have to replace the whole crank unless I need to.
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Tom from SWISCO responded:
I'm afraid there is no repairing the operator when the worm drive comes out. You will need a new operator entirely. I can help identify it, but I will need to see a picture of it out of the window.
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