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Question About Craftsman Garage Door Opener 139.53978SRT
I don't know how to determine my opener's model nu...

I don't know how to determine my opener's model number. I know it's a Craftsman 1/2 H.P opener, and I would like to find a manual so that I can learn how to re-program the code for access ... on the box outside the garage. I have entered the 1/2HP info. in the drop down menu below, but I have not idea if that is really my model number.

Asked by Philip Cynar on 06/19/2014 1  Answer

ManualsOnline posted an answer 10 years, 6 months ago

The ManualsOnline team has found the manual for this product! We hope it helps solve your problem. Get the Manual Here

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