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

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My garage door open half way than it stall, but if I givr it little push than the garasge door can open fully.

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Ty greese the pullies

Posted on Dec 23, 2008

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This is a basic question. We have old fashioned tilt up garage doors. They are wood and use springs on each side to open the doors and keep them open. I want to adjust the springs because: 1 one door will...


you move them up or down on the chain link on the bottom or on the holes on the garage door frame where they attach at the top. proper adjustment has the door open about half way with free travel on the opener. you also can change the size/length of the spring to adjust tension one way or the other. generally the best adjustment is from the bottom. an obviously, it is easiest to move the springs when the door is fully open. block it fully open with a long 2x4 or something as you do this, otherwise the door will fall good luck

Mar 27, 2015 | Garage Doors

1 Answer

I have liftmaster door opener 41a5021-1d. Using the remote door closes only half way. how can I repair this problem?


When the motor stops in the down position, pull the emergency release handle. Push the door fully closed by hand then engage the emergency handle. Open the door with the remote and then close it with the remote to make sure the door closes completely.

Oct 10, 2014 | Garage Doors

1 Answer

Power went out so I had to open my garage door manually. Now I cannot fully connect it back to the track. It just goes half way. I can see the problem but can't seem to get it to fully connect. Help.


Normally you pull straight down on the rope and then release. Now move the door until the two halves of the trolley line up and it should snap together.

Oct 27, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

I have a 3 stall garage with two garage doors, we also have 3 garage door openers. When I push the button on one opener both doors open or close. How can I fix this?


You will need to clear the memory of both openers by holding the smart/learn button in for 6 seconds. After doing this none of your remotes will work but your wall control will. Now you need to program the openers making sure you don't program any remotes for both doors.

Dec 13, 2009 | Sears Craftsman LiftMaster Chamberlain...

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After the door is fully open, the motor stalls when closing. It trys to continue to open instead of close and the screw drive carrage jams against the "open" end and stalls. I have to unplug it to get it...


It sounds like you have a broken or missing "upper limit switch". There is one for the down limit and should be one for the upper limit. If it is defective or missing the openers 'brain' will not tell the motor to reverse direction.

Nov 20, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Chamberlain Liftmaster bounces back up sometimes...


On the side of the motor unit you will find the 'down limit control'. Using a small screwdriver turn this control in the opposite direction of the arrow printed on the cover. Some tweaking will most likely be necessary. You can remove the cover and watch the limit switch assembly and get a good idea how it works.

Sep 30, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Sears garage opener opens back up when half way down


increase down force, especially if you are in a cold climate. turn to increase down force a little. test door to see if it reverses upon hitting something w/o too much force.

Jan 15, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage Door Opener Intermittingly Reversing


try adjusted the sensor controls on the sode of the unit other wise replace the logic board
http://www.chamberlain-garage-door-openers.com/circuitboardcompatibilitychart.htm

Dec 24, 2007 | Sears Craftsman LiftMaster Chamberlain...

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