A garage door should stay down when closed open when raised and at the halfway point when raised halfway.
How to balance a garage door with extension springs youtube.
You want an overhead garage door to operate easily and safely neither putting undue strain on a garage door opener or you.
With an extension spring door the goal is to take all the tension off the door before you even think about touching a spring you can do this by opening the door all the way and propping it up with a ladder.
This video will show you how to replace the extension springs on your garage door.
Here are the things to look out for and if you need anything you can go to.
Learning how to level and balance a garage door is easier than most think.
How to fix garage door tension.
Adjusting an extension spring door.