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

1 Answer

Craftsman chain drive opener won't stay down

My craftsman garage door opener will go down but when it gets to the bottom it reverses and goes back up unless I stop it with the remote or switch. Is there an adjustment for this problem?

Posted by on

  • John Holverson
    John Holverson Jan 31, 2009

    I tryed the adjustment screw with now Thanks for your help but it looks like a new opener.

  • John Holverson
    John Holverson Feb 01, 2009

    I tryed the blue adjustment screw again. previously I turned it up part way with no results then all the way with no results. This time I backed it up just a little from max and it worked ok. Thanks again for the help.

×

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Vice President:

    An expert whose answer gotĀ voted for 100 times.

    Sniper:

    An expert who has posted more than 50 answers, of which 90% or more were rated as helpful.

  • Expert
  • 98 Answers

Check the down limit:
If the light bulb(s) on your operator are on the front and/or back, the limit adjustment screw is on the left side of the operator (looking from the back of the operator and facing the garage door).. If the lights are on the sides of the operator then the limit adjustment screw is on the left side (looking from the back of the operator and facing the garage door).

Check the up and down force: 
On your operator (the box that hangs from the ceiling). If the light bulb(s) on your operator are on the front and/or back, the force adjustment screw is on the back of the operator. If the lights are on the sides of the operator then the force adjustment screw is on the right side (looking from the back of the operator and facing the garage door). Turn the light blue adjustment screw with the up arrow to a higher number.


Posted on Jan 31, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

We have installed the craftsman garage door opener and have continually adjusted the up and down travel limits and the door will not stay down


try adjusting the down force. the force necessary to may it reverse. it may be set too light. increase the down force and see if that helps. usually screw in back of unit. and usually labeled.

Jul 24, 2015 | Craftsman Garage Door Opener 1/2 HP Chain...

1 Answer

I have a 1/2 hp crftsman 41A4315 garage door opener. I changed the gear and now it won't close all the way. It started going down and reverse back up


your chain is in the wrong position, unhook the chain and run the door opener so it is in the down position, then reattach the chain and make the adjustments as needed on the up and down screwes located on the side of the unit. good lick

Jun 21, 2012 | Chamberlain Sears Craftsman 950cb 953c

1 Answer

My garage door sometimes gets stuck and then goes


Don't tighten the chain. It sounds like you have either a broken door spring or the drive gear in the motor unit is going bad. Release the opener from the door and operate it by hand. It should be easy enough to raise that your wife can do it with no problems and it should stay put when released about waist to shoulder high.

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

1 Answer

Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+: Door goes down and when it reaches the bottom, it ...


If the door hits the garage floor and then reverses to the open position you need to adjust the 'down limit' which is on the side of the motor unit. Turn this control in the opposite direction of the arrow printed on the cover. Some tweaking will probably be necessary.

May 16, 2010 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

My older Craftsman garage door opener comes down about 6" & then goes back up. I just replaced all the rollers o& the opener worked fine. Then I tightened the chain on the opener & it worked ok...


If the main light flashes 10 times when the door goes back up it is a door sensor problem. You chain should sag just a little. If you tighten it too much it will click as it goes over the sprocket. You can increase the down force which is an adjustment near where all those white wires go. A 1/4 turn should be enough. Release the door from the opener and operate it by hand. It should move freely and when you have the door approximately waist high it should stay put. Neither raising nor closing.

Jan 11, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

I have a Craftsman 1/2 HP chain drive garage door opener.


You need to take the cover off the motor unit and watch how the limit switch assembly works. If the door is not stopping when the contacts make then you have a bad logic board.

Jun 14, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Craftsman 1/2HP Door Opener won't stay closed


Loosen the chain and run the opener until the sprocket runs in the counter clockwise direction and stops. Now with the door in the open position replace the chain. This will get everything back into sync but I hope you remembered where all those controls were. You need to put them back in their original positions.

Jun 06, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage door opener problem


If the safety eyes are not connected you need to ho;d the button down until it reaches the close linit.

Feb 19, 2008 | Sears Craftsman LiftMaster Chamberlain...

Not finding what you are looking for?
Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+ Logo

908 people viewed this question

Ask a Question

Usually answered in minutes!

Top Sears Building Materials Experts

Mike

Level 3 Expert

4332 Answers

Cindy Wells

Level 3 Expert

4804 Answers

Brad Brown

Level 3 Expert

13751 Answers

Are you a Sears Building Material Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...