Andersen crank replacement

A home owner from Conifer, CO says:
November 2, 2015
I have a window crank with id numbers:

c-9400-1b on the top of the unit
1 361 405L on the 14 inch arm

And on the bottom:
f-9400-8A
1 361 404 R on the 14 inch arm

See photo attached.

I need one replacement. What part number do I order from you?
User submitted a photo of a window operator.
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
November 5, 2015
Please take a look at our 39-331 operator. This is used by Andersen on their newer windows. You might also need to purchase the sill adapter, 39-362, but only if your window was manufactured between 1995 and 1998.
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