To troubleshoot this issue find a step ladder and place it beneath your liftmaster garage door opener.
Liftmaster garage door opener adjustment travel.
Press and release the up arrow button.
Garage door opener remote controls liftmaster offers a range of remote controls that fit any lifestyle and work with nearly any garage.
After making any adjustments check the safety reversal system and test the protector system.
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When the travel limit exceeds the distance the door travels the liftmaster garage door opener assumes there is an obstruction in the way of the door so it reverses.
How to adjust the limit or travel on a garage door opener with manual adjustment screws limit adjustment settings regulate the points at which the door will stop when moving up or down.
Use a flathead screw driver to make the adjustments.
If the motor shaft moves back and forth through the motor more than 1 16th of an inch during operation it could lead to the door traveling only a short distance before reversing.
You can use both the up and down arrow buttons for adjustment.
Ensure the motor shaft is tightened enough so that there is not too much endplay in the shaft.
When the garage door is in your desired down closed position press and release the rectangular adjustment button.
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Changes are necessary if the door reverses during closing moves with too much force or strikes the ground and moves back to the top.
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There are two types of adjustable down limit on liftmaster garage openers.