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

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My Chamberlain garage door opener only opens 8 inches.

My Chamberlain garage door opener only opens 8" and then stops. No obstructions on the rails. I need to get the yard mowed. Help please.

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Sounds like you have broken door springs or a bad drive gear. Take a good look at the springs and then remove the cover and look at the gear. It is white nylon and is just in front of the motor.

Posted on Sep 07, 2009

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