If simply hitting the button does not work you will have to take more action.
How to put garage door back on chain.
It has 2 stop nuts that hold the chain in place and adjusts the tension on the chain.
Pulling back a second time does.
This will release the door from the garage door opener.
When you disengage it it s easy and obvious.
Reach overhead and pull the rope that releases the door from the opener.
You should be able to slacken the chain by loosening the nuts put the chain back on then retighten the chain.
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Disengage the garage door from the opener by pulling down on the emergency pull cord to release the door trolley.
The next step is to go to the inside of the garage door.
The first thing to do is hit the door button.
Cycle the opener to the end of a down cycle.
The chain is attached to a threaded rod that is attached to the trolley.
To reinstall the chain on the sprocket first with the door closed pull the rope hanging down from the trolley on the t bar.
The first key is that you have to open your garage door.
Trying to reengage your garage door opener with the door closed doesn t work.
This video from sears partsdirect shows how to replace the chain and cable assembly on a chain drive garage door opener.
Located along the rail the chain an.
You simply pull back on the emergency cord and it disengages.
Open the door manually.
Observe which direction of rotation is down.
Some units will actually reconnect themselves but this is not typically the case.
Once you locate where the wheels on the door are jumping.
Next up is reattaching the gear to the track.
How to put a chain back on an automatic garage door opener step 1.
Press the wall control button or remote so that the opener completes its close cycle and the sprocket on.
Disconnect the garage door from the opener.
Loosen the inside nut and back it off 6 8 turns back the outside nut off 5 6 turns this will give you some slack in the chain.