There are only a few ways that the chain can be tightened.
How to fix a sagging garage door chain.
Documenting how i repaired the garage door.
How do i adjust it.
This opening system is one of the most popular options but it can manifest a problem.
The chain got loose and popped off the gear.
Watch this video and see the professional at town country door llc demonstrates the.
If you find that your garage door opener chain has become loose with time you may want to tighten it up in order to remove some of that slack.
I am not a professional.
You may find that a loose garage door opener chain has less power to open and close your garage door or you may find that it is just hitting the door as it moves it and creating an annoying sound.
There may be an adjustment linked to the chain or an adjustment to the length of the door opener track.
Over time the drive chain can loosen and create slack.