On chamberlain garage door openers they are usually blue.
Chamberlain whisper drive garage door opener travel adjustment.
Travel and counter clockwise for less open travel.
Equal about 2 of travel adjustment.
To operate the opener press the door control push bar.
One full turn of the adjustment screw will.
From informational videos to product manuals and troubleshooting articles the chamberlain group resource library has the information you need.
Now open the garage door with your remote to check if it opens fully.
Adjustment step 1 adjust the up and down travel limits limit adjustment settings regulate the points at which the door will stop when moving up or down.
E g if the dial is set to 1 increase it to 2.
It is important to set the up open travel limit properly.
Using the up open limit adjustment screw you will turn the screw clockwise for more open.
Increase the open force adjustment dial slightly.
If the door won t stay open to its full extent or doesn t close flush to the ground the travel control needs an adjustment.
This video details how to adjust the opener force and travel of the door.