Replacement Marvin casement windows

Handy Person from Newton, MA
The windows where installed in 2000. Bronze, folding. The casting cracks which maybe why Marvin discontinued them. I don't know which diameter of the spline is measured, but the largest diameter seems to be 5/16".

Thanks for any help you can offer in finding a replacement crank.
User submitted photos of a window operator.
2 Replies
Dave Sr.
Dave Sr. from SWISCO
SWISCO
Expert
We don't have this exact handle/cover combo, but open the window up and check the operator arms for the word "Truth." I think this may be what brand operator you have. If so, you may be able to use our 39-107FK as a replacement. Also be sure that the dimensions for this part are compatible with your setup.
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