caradco casement mechanism

A quick learner from radnor pa says:
crank unwinds and comes off instead of closing window- pls advise on parts- THANKS!
A user submited photo of window operator
Profile picture of Donna
Donna from SWISCO responded:
Thanks for posting with a photo. It looks like this might be SWISCO product code 39-032 or 39-156. These operators are very similar but have different length link arms to compare to your operator.
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