If it stays in place your spring or springs are fine.
How to disengage garage door spring.
There are two different types of spring systems for garage doors.
Pull cord down and back towards motor with a small amount of force.
You can now open and close your door manually.
The springs do not pull with enough force to open the door but they do take the strain of most of the door s weight.
Then clamp as described above.
Just because the door isopen does not mean that the spring tension is fully released.
Disengage the garage door from the motor or in other words put the door into manual mode.
Use the emergencyrelease rope to disconnect the opener from the door and push the door up as faras you can without damaging the opener.
Torsion springs are mounted directly above the door and need to be wound with special tools.
Close the garage door and pull the emergency release.
Lift the door manually to about waist height bring it to a stop and let go of it.
This is true even if you have a garage door opener.
Garage door springs are used to reduce the weight of the garage door by pulling the door in the direction of the motor.