Dave Sr. from SWISCO responded:
April 15, 2014
We don't have this operator with a 9-1/4" arm, but the only problem I can foresee with that is that the window might not open quite as far as it could before. As long as the installation holes match, it should be okay.
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Paul from SWISCO responded:
April 21, 2014
The teeth might be worn near the end of the operator and that could be why it needs a push to get started. Before you purchase a new operator, remove yours completely. Then, try moving the sash in and out and see if it still hangs up. If so, it's possible that you might just need to lubricate the hinge. If it moves freely, then replace the operator.
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