The crank brok off of the window mechanism

A from Piney Flats Tennessee says:
November 6, 2020
I was rolling in the window and the crank snapped off at the base, now the window is stuck open
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Bob from SWISCO responded:
November 10, 2020

See either our 39-253RB or our 39-439. The difference between these two operators is illustrated in the video below. For a new cover and handle, the 39-376 or 39-452 will work with either operator.
A quick learner from Piney flats says:
November 16, 2020
How can i fix this? I cant get at the hardware to replace the crank
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Bob from SWISCO responded:
November 16, 2020

I am afraid when that spline snaps, it's indicative that the entire operator has broken down and should be replaced. See if one of the suggestions mentioned above could work for you. 
Encore Dual Arm Operator, Sill Mount
Encore Dual Arm Operator, Sill Mount
39-253RB
$30.70
Encore Dual Arm Operator, Sill Mount, Low Profile
Encore Dual Arm Operator, Sill Mount, Low Profile
39-439B
$38.64
Encore Truth Operator Cover and Handle
Encore Truth Operator Cover and Handle
39-452
$12.05
Encore Truth Folding Handle with Cover
Encore Truth Folding Handle with Cover
39-376
$11.97
How to Orient a Dual-Arm Operator
How to Orient a Dual-Arm Operator
VIDEO
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Comparing the 39-253LB & 39-438B Operators
Comparing the 39-253LB & 39-438B Operators
VIDEO
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Anatomy of a casement window
Anatomy of a casement window
VIDEO
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How to identify casement and awning operators
How to identify casement and awning operators
GUIDE
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