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

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I need 2 3/4 hp chain garage door openers

Need advise what mfg to buy Sears or Chamberlain...help now !!

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Same thing basically. guts are same. buy by price.

Posted on Jan 15, 2009

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Don't know Mod. No. lost installation manual, approx. 5 yrs. old Need installation manual.


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    [PDF]GARAGE DOOR OPENER Model 3265 1/2 HP ... - LiftMaster

    www.liftmaster.com/.../en.../tucmanuals/114a3044.pdf Chamberlain GroupFasten the manual near the garage door after installation. .... This garage door openerhas been designed and tested to offer safe service provided it is installed, ...

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    CraftsmanCraftsman has the best selection of Garage Door Openers in stock. Get the Garage Door Openers you want from the brands you love today at Craftsman.

    Craftsman 1/2 HP Chain Drive Garage Door Opener - Sears

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    Craftsman1/2 hp Chain Drive Garage Door Opener Opens by Remote, Inside and from Car Enjoy a great end to every day by ... Owners manual - English (Warranty).

    Free Craftsman Garage Door Opener User Manuals ...

Feb 03, 2016 | Garage Doors

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I have a Acess Master 1/3 HP garage door opener. i need to tighten the chain, can anyone tell me how this is done?


The adjustment for the chain is done at the back side of the trolley. A 1/2 inch open end wrench will do the trick.

Jan 19, 2011 | Sears Craftsman LiftMaster Chamberlain...

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We just installed a CG40Chamberlain 1/2 hp garage


Your logic board is bad. If this is a used opener I would pull the logic board and look for loose or missing traces on the printed circuit board.

Apr 19, 2010 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

Sears Craftsman 1/2 hp chain garage door. The light blinks at the garage; will open the door but the remotes do not work. Can you help?


I have worked on a few garage door operners. Sometimes the solder breaks where the metal maked contact. Could have it checked or may need a replacement from Sears.

Oct 23, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Need a manual for sears model 139.18856, 1/2


According to Sears your model number is bad. Double check the number and they will have the owners manual with complete installation instructions.

Sep 25, 2009 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

Garage door opener won't open or close door


The drive gear is stripped. Remove the cover and you can see it just in front of the motor. It is white nylon and the part number is 41A2817. Available from Sears or any good door opener service company. It will come with instructions.

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

1 Answer

Where is the emergency release on Sears Craftsman Garage Door?


You can find exploded views and parts lists of the opener at SearsPartsDirect.com

I just checked.


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

1 Answer

How do I disconnect my opener and manually open my garage door?


Check up by the motor. There should be a latch you can pull down that will disengage the chain from the door. After that, just pull the door up or down as needed.

Feb 11, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Sears garage door opener, chain adjustment


Loosen the inner nut on the trolley. (That is the lock nut). Then tighten the outer nut on the trolley to increase tension. The outer nut on the trolley is closest to the garage door. The chain tension should be 1/2 inch off the rail at midspan. (The chain is fastened to a threaded bolt on to the trolley. The threaded bolt has an inner and outer nut). Hope this helps.

Dec 24, 2008 | Sears Craftsman LiftMaster Chamberlain...

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