Window cranks out, but not back in

A home owner from Southern Pines, NC says:
December 31, 2022
Part numbers on bottom of mechanism are: 7198-17, 7198-8,and maybe? 1361-18. Can the whole gear and arms be replaced? I think the windows were original in 1984? Thank you.
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Tom from SWISCO responded:
January 4, 2023

Hello! This appears to be an Andersen split arm operator, specifically our 39-147. We also sell the 39-146 for the opposite side.

The gears and arms cannot be replaced on their own, unfortunately. If they're broken then you will need an all new operator mechanism.
Andersen Window Crank, 4-1/2"
Andersen Window Crank, 4-1/2"
39-147
$43.57
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