Replacement Crank Mechanism

A home owner from Burlington, Ontario, Canada says:
Hi there,

We recently moved into a house with Swisco cranks and have discovered none of them work. I believe the entire crank mechanism needs to be replaced but not the hinges. There are 5 crank windows in total.
The crank is P4601
User submitted photos of a window operator.
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
Hey, thanks for posting. This looks like an older model Roto operator. We have a couple in the newer style, but I'm not certain if they are what you have; I can only see the base of the operator in your picture. I recommend that you open the window and compare your arms to the arms that come with our 39-091 and 39-092. Could these work for you? You may also need a new handle, so see our 39-224.
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