There is a bolt that is turned clockwise to actually extend the length of the track thus removing the slack from the chain.
Stanley garage door opener chain tension.
Keep in mind that the remote control will not operate the door until the beam sensor has been attached and properly aligned.
The second adjustment is located on the top of the opener body.
Chain adjusts by moving the opener trolley guide tube or rail.
To open the door completely adjust garage door opener by turning the limit counterclockwise.
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Too much tautness in the chain could lead to it breaking.
This is common on the stanley chain drives that utilize the tubular style track graphic below.
Step 1 adjust the limit.
Turn it counterclockwise holding the other nut in your hand to prevent it from turning.
Turn the adjustment screw on the limit clockwise if the door doesn t fully close.
Don t overtighten the chain.
If your stanley garage door opener will not work ensure that it is plugged into a live 120 volt outlet.