Searching for 1982-02

A quick learner says:
Looking for replacements. What causes the screw handle to come out of the socket when closing?
User submitted photos of a window operator.
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
That worm gear comes out when the inside gearing of the operator is stripped. It can't be repaired, I'm afraid. You'll need an all new operator, but I can't tell what you have from this picture. It might be our 39-025. Start by carefully going over our measurements and pictures to see how well it matches yours.
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