Question about Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+

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Garage door will not open

I just installed a craftsman chain drive model 553985, it will not open the door, it acts like it is trying to run the chain the wrong way. I believe it is installed properly, but it will not open the door.

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You can fix this by loosening the chain enough that you can lift it off the sprocket. Then run the opener until the sprocket turns counterclockwise and stops. Now with the door in the open position replace the chain. This will get the chain running the right direction. You will have to adjust the open and close limits along with the force adjustments but that will all be covered in your owners manual.

Posted on May 27, 2009

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Posted on Jan 02, 2017

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Many thanks

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