Question about liftmaster Chamberlain Garage Door Opener Transmitter 300MC
I'm not sure what model of Stanley garage door opener we have, but it is for a double garage door, and is a chain driven opener. My husband has made adjustments to the screw adjustment tightener which works temporarily, but inevitably the chain loosens up and literally drags (making marks), on our garage door. Is it possible that the screw adjustment is stripped and causing it loosen up or is there another adjustment/problem we should be looking for? thanks
THE ADJUSTMENT IS SUPPOSED TO HAVE A 2ND NUT THE TWO TIGHTEN AGAINST EACH OTHER AND ACT LIKE A LOCK
Posted on May 26, 2010
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Posted on Jan 02, 2017
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