These are normally plastic and will be marked either up and down or open and close step 3 if you wish for the door opening height to increase you will turn the up or open screw in a clockwise direction.
How to get garage door to pull higher.
Because garage doors are usually sized to snugly fit the dimensions of the garage itself making the door larger usually means making the garage larger.
This will help to position it to the correct spot.
Locate the limit adjustments screws located on the side of the opener.
Adjust the springs on both sides of the door the same way.
If the door was closing too quickly move the spring to the next higher hole on the bracket.
7 1 from the back end of your horizontal track measure the distance of your high lift conversion.
This is the additional height your garage door will open.
If it was opening too quickly move it to the next lower hole.
Add to that distance the length of track that is left once you open your garage door.
Use a screwdriver to loosen the screws that are in the tracks to secure it to the garage door frame.
Retest the door balance as you did in step 1.
Once your garage door opener has disengaged you can step down from the ladder and use the handle on your garage door to lift the door.
One way to do it would be to get wall extensions for the entire the garage and then cut the roof of the garage off lifting it up to the height you want it.
Other doors have this handle on the side.