Confused! Which Operator do I Need?

A quick learner from Farmingdale, NY says:
September 28, 2021
Hi?Was looking at your website. I we need a crank assembly for the window. Two of the gears are stripped. I can't figure out which one it is. I can't find any manufacturer names or part numbers on the window. Please get back to me. Thank you ? ? Mark
Thumbnail of the uploaded file named 13D7CF3B-159C-464A-804B-218733381BE9.jpeg
Thumbnail of the uploaded file named 04682CB2-8712-42C3-BBDC-BBD359C3AF74.jpeg
Profile picture of Bob
Bob from SWISCO responded:
October 4, 2021

Casement operators are most reliably identified based on the style and the dimensions. This operator looks most like our 39-171 to me. Just look over the dimensions listed in the pictures on its shop page, and let me know if anything seems askew. For a new handle see the 39-114L. 
Crank Handle, 11/32"
Crank Handle, 11/32"
39-114L
$4.42
Truth Hardware Dyad Operator
Truth Hardware Dyad Operator
39-171
$32.55
SWISCO Window Operator Crank Handles
SWISCO Window Operator Crank Handles
VIDEO
WATCH >
Connecting a casement window operator to stud bracket
Connecting a casement window operator to stud bracket
VIDEO
WATCH >
Anatomy of a casement window
Anatomy of a casement window
VIDEO
WATCH >
How to identify casement and awning operators
How to identify casement and awning operators
GUIDE
READ >
Reply to Thread
Use this form to ask a follow-up question or to share your experience regarding this subject.
(your email address will be kept private and is only used to inform you when a response has been made)
Current wait time is 3-4 business days
We promise that one of our experts will personally get back to you as soon as they are able. Thank you very much for your patience and understanding. If your inquiry is time-sensitive, please feel free to reach us at (888) 991-1929 or at help@swisco.com.