Hold the garage door in this position by attaching a c clamp to the track at a point below the lowest door roller wheel.
Proper chain tension on garage door opener.
On the master link you will see two or three nuts.
Replace the batteries in the door remotes.
By william machin you need proper tension on a garage door to operate the door by hand or with an automatic opener.
There may be an adjustment linked to the chain or an adjustment to the length of the door opener track.
This is true even if you have a garage door opener.
Use the wrench to loosen the lock nuts and turn the adjustment nut to set the slack in the chain.
Both adjustment types should be done with the door closed and disconnected from the opener using the emergency release.
If it does not open you need to replace the backup battery.
Just because the door is open does not mean that the spring tension is fully released.
Unplug the garage door opener then try to open the door with the wall button.
Using a screwdriver remove the cover on the garage door opener and then replace the spent battery with a new one.
Usually a pair of nuts are associated with the locking mechanism while one is concerned with the adjustment of the chain.
There are only a few ways that the chain can be tightened.
If the tension is too loose the springs that help lift the door are ineffective.