Acroline bow window crank mechanism

Question

Hi,
I am looking for a replacement part for an Acroline bow window crank. It seems that the one that in on this current window is stripped and you turn it and it does not retract the window.
Thanks
,Mike

Bob · Accepted Answer

Hey Mike. This looks like an old ROTO 39-091 and 39-092 short-arm operator. Please compare to confirm. The bracket arm that connects these operator short arms to the sash are no longer made, so you'll have to reuse your old ones if possible. For a crank handle see the 39-224 sold separately.