Grasp the chain 1 foot from where it connects to the end of the threaded chain anchor.
Fix garage door chain.
Over time the sprocket s teeth can wear and the chain may jump or skip when the opener raises the door.
Thread the nut s facing the door clockwise until it meets the bracket then release the chain.
Having an automatic door opener in your garage is a great convenience but you have to give the opener and all its parts regular.
Chain drive garage door openers have a sprocket that is attached at the top of the motor.
For many generations people rely on this type of door opener not only because it is easy to use but also because it is cheap and can easily be repaired when broken.
Sometimes the cable will break if it is a combination chain and cable drive system.
Pull the chain toward the garage door and hold it in position.
Press down on the chain with your finger.
In this case the cable can be replaced fixing the problem.
You should have 1 2 inch of play in the chain.