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

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Chain gear is stripped//garage door opener //lift master 1/3 hp

How did you change the plastic gear?...i looked at it and it does not look that easy to fix.

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  • Anonymous Dec 20, 2008

    i had the same problem. i got a repair kit from sears that fit my model no. it took about an hour to replace all the gears. i put everything back together and it is doing the same thing. anyone have any suggestions.


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I made a webpage that includes the instructions that come with the gear kit. How to replace the gears, reset the travel settings, lots of pictures, part lists and numbers.
chain gear is stripped//garage door opener //lift  - cb953ba.jpg

Posted on Mar 29, 2010

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