Identify Replacement Part

A handy person from Edgewater, FL says:
Trying to identify the replacement part for the crank mechanism on a jalousie window. The crank comes off when you close the window.
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Dave Sr. from SWISCO responded:

Hello,

I would recommend starting by comparing the Keller 39-061 awning operator to yours. Check to see if yours has the same hole locations since the top hole is offset and the bottom mounting installation holes measure 1-1/8" on center. Also, check your link arm that attaches to the window linkage to confirm if it has a threaded hole at the end that takes the 33-070 shoulder screw. Thank you. 

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