Semco Window Crank

I have Semco windows and the crank operator appears to be the same brand. I am not sure of the gold gear mechanism. The window crank that you spin to open/close the window seems to have unscrewed itself from the unit, which now redners it uselss. Do i need to replace the entire piece, meaning, the operator, gold gears and the arm that swings open the window? I can't seem to see anything on the gold gears (not sure what that is called). but basically, on two of our windows, when you spind the crank, it comes out of the thing it twists into, pops off and does not allow for proper widnow open/close

I have attached the photo of the window in its open position- we have another window doing the same thing but opens the the opposite side. So if this works, we will need two replacements one of each side, if that makes sense.