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garage door chain gets stuck at trolley

Model 139.53985D - at junction where cable meets chain jams when it gets to the trolley assembly during opening. Happens most of the time but occasionaly it works fine. History - someone broke into my garage to steal a bike and release the trolley during his escape ( caught by police - yahoo)

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Manage My Life
I am very sorry to hear the someone broke in, but very happy to hear they were caught. I know how important it is to have the garage door working properly. While you are waiting for you expert answer, I was able to find a link that will provide some information and troubleshooting for this problem. It soulds like you need to adjustment the limit screws on the opener. The link will tell you how to do this. I hope that this will help you.
by Manage My Life
May 24th, 2011
Answered in 9 minutes
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