You should also find buttons or nobs that will adjust the force too.
Manual garage door won t stay all the way up.
Slowly close your door about halfway and release it.
Hold the garage door and remove the vise grips from the track after the spring tension has been adjusted.
Ideally the door should slowly float up from this point.
The limit adjusters control how far the garage door goes up and how far it goes down.
As the garage door motor lifts the door it pushes against the limit switch in blue in the diagram causing the motor to cut out at the correct height.
Release your hold on the door and see if it stays up all the way.
From here lift the garage door by hand about 3 feet above the ground and then release the door and see were it lands.
Similarly if you door won t open all the way then the limit switch may be too close to the motor.
If your garage door is not balanced right it won t go up or down all the way.
Locate the limit adjusters.
Move the limit switch to try and solve this issue.
Start by making sure your garage door is open all the way.