A sagging chain is a result of normal usage of the garage door opener.
Tighten garage door chain.
The one you re looking for is attached to a bolt found at the spot where the trolley or carriage connects to the rail.
Twist the outer nut clockwise with the wrench to move the trolley and tighten the chain.
Chain adjusts by shortening the chain itself.
There may be an adjustment linked to the chain or an adjustment to the length of the door opener track.
Slowly turn the outer nut as you watch the slack on the chain above your chalk mark.
The trolley is responsible for pushing or pulling the opener arm along the chain so as to open and close the garage door.
Turn it counterclockwise holding the other nut in your hand to prevent it from turning.
Using your wrench you can start to loosen up the adjusting nut on the side of your carriage closest to the opener head.
Continue to turn the.
There are only a few ways that the chain can be tightened.
Both adjustment types should be done with the door closed and disconnected from the opener using the emergency release.