Too much tautness in the chain could lead to it breaking.
Stanley garage door opener chain tension.
If the motor overload protector has been activated wait 10 minutes for the motor to cool down.
To open the door completely adjust garage door opener by turning the limit counterclockwise.
Keep in mind that the remote control will not operate the door until the beam sensor has been attached and properly aligned.
Then use the wrench to tighten this second nut clockwise until the chain is tighter but not so taut that it is completely inflexible.
Step 1 adjust the limit.
Same rule applies concerning recommended chain slack.
There is a bolt that is turned clockwise to actually extend the length of the track thus removing the slack from the chain.
Don t overtighten the chain.
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.
The second adjustment is located on the top of the opener body.
Turn the adjustment screw on the limit clockwise if the door doesn t fully close.