40395 replacement crank arm

A home owner from San Francisco says:
October 14, 2021
Hello I have stripped gears in a crank arm I am trying to replace. To me it looks like WINDOW DYAD CRANK, 5" Product Code: 39-089 is the replacement part. Not sure I disconnect the arm from the window because I could not see the locking mechanism as it's a bit hidden underneath. Do you know I just have to slide the locking part back as in the video but in a different location? The window in a remote cabin so I can't take a look right now. Thank you!
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Casey from SWISCO responded:
October 19, 2021

Hello,

I agree that as long as the specifications match up, your operator looks like a match to the 39-089 and 39-090. Keep in mind that the detach clip is underneath the operator arm, so you'll need to release it from the bottom. Thank you. 
Window Dyad Crank, 5"
Window Dyad Crank, 5"
39-089
$43.70
Window Dyad Crank, 5"
Window Dyad Crank, 5"
39-090
$43.70
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