I replaced the gears on my 1/3 HP Liftmaster garage door opener. hey were stripped.
Now, after I have reassembled it, when I turn it on it only runs for about 3 or 4 seconds ... then pauses ... runs for 3 or 4 seconds in the opposite direction and then stops.
I don't have a manual for the opener. How can I adjust the motor to run longer???
Funny ... but it was running fine prior to the gear wearing out.
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