Adjustability of Awning Window Leaver Operator

A quick learner from Colorado says:
I have several awning windows that do not completely close when the handle lever is in the fully closed position. This creates a big gap along bottom edge and a drafty situation. Can I adjust them to pull the window in more tightly, or do I have to replace the hardware?
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Casey from SWISCO responded:

Hello,

It sounds like there's a good possibility that it's time for a new operator and that the gears might be stripped. Before you purchase a replacement 39-070, I would recommend removing the operator and trying to close the window by hand to make sure that it still doesn't get hung up, which could indicate that the problem is stemming from the hinges and not the operator. 

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