Hurd casement wondow crank replacements-right and left handed

A quick learner from villanova pa says:
Hi-I need to identify a right and left handed replacement for my Hurd casement wondows. the gear is stripped on each of them.
Thumbnail of the uploaded file named IMG_3434.jpg
Profile picture of Bob
Bob from SWISCO responded:

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. 

How to Orient a Dual-Arm Operator
How to Orient a Dual-Arm Operator
VIDEO
WATCH >
Comparing the 39-253LB & 39-438B Operators
Comparing the 39-253LB & 39-438B Operators
VIDEO
WATCH >
Anatomy of a casement window
Anatomy of a casement window
VIDEO
WATCH >
Reply to Thread
Use this form to ask a follow-up question or to share your experience regarding this subject.
(your email address will be kept private and is only used to inform you when a response has been made)
Current wait time is 4-7 business days
We promise that one of our experts will personally get back to you as soon as they are able. Thank you very much for your patience and understanding. If your inquiry is time-sensitive, please feel free to reach us at (888) 991-1929 or at help@swisco.com.