Tightening your garage door chain is a simple matter of turning the right nut.
Tightening a garage door chain.
There s usually a piece of rope hanging from it which is used to disengage and re engage the opener.
Turn it counterclockwise holding the other nut in your hand to prevent it from turning.
Thankfully garage door manufacturers have included a part in their designs that can help you tighten your chain and stop the chain from slapping against the rail as it opens and closes your garage.
The one you re looking for is attached to a bolt found at the spot where the trolley or carriage connects to the rail.
The trolley is responsible for pushing or pulling the opener arm along the chain so as to open and close the garage door.
Tighten the chain using the tension nuts after verifying the chain needs tightening begin by turning the inside nut which is the one closest to the opener several turns in a counterclockwise direction when facing the door.
Then use the wrench to tighten this second nut clockwise until the chain is tighter but not so taut that it is completely inflexible.
A sagging chain is a result of normal usage of the garage door opener.
How to tighten your garage door chain.