Replacing a Deck House Sash Operator
If your sash is not opening, usually the problem you are experiencing is with the “operator” (the part that the crank attaches to that opens the window) rather than the crank. If the crank is stripped, you will be able to open window using light pressure to turn the stem of the operator (the area that the crank slips over). If the window does not open using this method, the operator shaft has most likely snapped. You should be able to replace the operator yourself if you are able to remove a few pieces of trim and a few screws.