Turn it only a quarter of a turn.
How to adjust the garage door height on my chamberlain.
Note adjustment screws are on the left side of garage door opener motorheads.
If you would like to increase the height of the garage door then you will have to turn the up screws.
If the up travel isn t functioning properly turn the up limit adjustment screw clockwise.
Step 4 test the opener to see if the door height is now at the desired level.
To decrease it turn it counterclockwise.
This video details how to adjust the opener force and travel of the door.
You can as well turn on open in case of the garage door with a mark and close sign.
When the garage door is in your desired up open position press and release the rectangular adjustment button.
Press and hold the down arrow button until the garage door reaches your desired down closed.
Every complete turn equals 2 inches of travel.
If you wish for the door opening height to increase you will turn the up or open screw in a clockwise direction.
The garage door opener light will blink twice and the down arrow light will begin to blink.
Position ladder below the back or rear portion of the opener to access the screws.
Use both the up and down arrow buttons for adjustment.
Establishing the travel limits of chamberlain garage door openers.