It s important to get this switch at just the right distance from the motor so that the door is able to close all the way but the motor also knows to stop running.
Chain drive garage door opener adjustment.
T his is a pretty uncommon problem but one that can happen after you ve first installed your garage door opener.
Step 4 adjusting the chain.
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A sagging chain is a result of normal usage of the garage door opener.
This is related to the up limit switch.
Garage door openers 9 chain garage door openers 9.
There may be an adjustment linked to the chain or an adjustment to the length of the door opener track.
Reliable and powerful liftmaster chain drive garage door openers are built to handle heavy and frequently used doors with ease day in and day out.
How to tighten the chain on a stanley 7400 garage door opener.
A flathead screwdriver is all that is needed to make a limit adjustment on most garage door openers.
Both adjustment types should be done with the door closed and disconnected from the opener using the emergency release.
There are only a few ways that the chain can be tightened.
Try making small adjustments.
This is where you will be working on in the next step.
If the up travel isn t functioning properly turn the up limit adjustment screw clockwise.
Locate the lower cover of the garage door and use the screwdriver to open it.
Chain adjusts by shortening the chain itself.
If the door won t stay open to its full extent or doesn t close flush to the ground the travel control needs an adjustment.
Push the open set limit button then release to save the door s position as the new open limit setting.
The green indicator light will flash twice to confirm.
Program the garage door opener to recognize when your garage door is completely open.
How to tighten the chain on a stanley 7400 garage door opener.
Liftmaster and chamberlain are popular garage door openers with chains.
Once you have access to the inner components of the garage door opener locate the master link the point where the chain forms a junction with the cable.
This video details how to adjust the opener force and travel of the door.