Question about Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+
I just changed the gears in the craftsman 1/2 horsepower opener and when I tried for the first time the door opens 2 feet and then closes right away.I tried all the adjustment screws and nothing seems to be working.Can someone please help.Thanks
There is an issue with the limit settings. They are the three white screws you can see with the cover off. Put the door in the down position. take the small white piece off the bottom of the gear and sprocket assembly. Turn the center screw until the silver "wing" is at the bottom position. Put the white piece back on the bottom of the gear and sprocket. Adjust the up screw until the door opens fully. Check the force settings. They both should be set on 4-5.
Posted on Feb 26, 2009
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Posted on Jan 02, 2017
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