Hurd casement wondow crank replacements-right and left handed

Question

Hi-I need to identify a right and left handed replacement for my Hurd casement wondows.  the gear is stripped on each of them.

Bob · Accepted Answer

This appears to be either a 39-253LB or 39-438B operator. These operators are very similar save for a difference in the attachment at the end of the straight arm. The video below explains.