Window crank
Hello,
Unfortunately, your original operator is no longer available. We have replaced your original hardware with something like the 39-365 and 39-366 9-1/2" Single Arm Operator in the past, along with the 39-504 track.
Another option would be to see if you could use the 39-381 and 39-382 Casement Window Dyad Operator with a bracket like the 39-513 and 39-514 Truth Stud Brackets. This operator also uses the 39-107 cover or the 39-107FK cover and handle kit. I am not sure of the length of the "link" arm in your operator, but you'll need to be especially sure to compare that.
To determine if either of these might work for your repairs, take a look at each of their dimensions and design. There are also a few videos related on this page for your review. Thanks for posting!