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Stanley garage door opener chain tension.
Same rule applies concerning recommended chain slack.
To open the door completely adjust garage door opener by turning the limit counterclockwise.
Don t overtighten the chain.
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.
Chain adjusts by moving the opener trolley guide tube or rail.
This is common on the stanley chain drives that utilize the tubular style track graphic below.
Step 1 adjust the limit.
Then use the wrench to tighten this second nut clockwise until the chain is tighter but not so taut that it is completely inflexible.
There is a bolt that is turned clockwise to actually extend the length of the track thus removing the slack from the chain.
The second adjustment is located on the top of the opener body.
Keep in mind that the remote control will not operate the door until the beam sensor has been attached and properly aligned.