Replace operator for kitchen vinyl windows.

A quick learner from 03102 says:
This is the right hand window. Will need both the left and right along with covers and cranks in white.Thank you.
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Bob from SWISCO responded:

Thanks for posting. I am pretty confident we can replace this casement operator, but it looks like the link arm is missing on this one. Is there an undamaged version you can show us, with the link arm still intact? From there, we'll do our best to narrow down what you need. Thanks.

A quick learner from 03102 says:

Hi, it looks like the arms in the photo I sent are intact. Both left and right windows are the same. It just seems that the worm gears in the operator section are stripped.

Thank you.

Arnie

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Bob from SWISCO responded:

Hi Arnie. I certainly see the arms for a casement window hinge, but these arms are not the same arms that connect to the operator on the window sill. The casement window hinges not connected to the operator: they connect the window sill to the casement window, and they are essentially what guide and support the window sash during its opening and closing. But the arm I'm speaking of should be coming out of the back of the operator and connects to that stud bracket also in your photos, which looks like either the 39-513 and 39-514. The split arm on the casement operator is actually what 'pushes' the window open or 'pulls' it close. 

Take a look at our 39-090 or 39-188. These have the bodies of your operator, but also a so-called 'split-arm' that emerges from the back of it. This is what connects to that stud bracket in your photos. I believe you need something like one of these two operators, but you'll note there are slight differences in the shape of their split-arms. This difference affects compatibility, which is why seeing one with the arm still intact would be best. 

A quick learner from 03102 says:
Hi, did a little more digging and found the missing arm I think you were looking for. I reattached it but the worm gear is clearly stripped.
Thank you!
Arnie
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Bob from SWISCO responded:

Hey Arnie, thanks for getting back to me with the arm. This definitely looks like the 39-188 to me; the shape of the gear-arm has a tell-tale 'W' shape. Let me know if you have any other questions.  

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