Just tighten enough to stop it hitting the rail.
Garage door opener chain repair.
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If your chain is badly corroded you may need to remove the chain from the carriage assembly and soak it in lubricant for a few hours.
The chain got loose and popped off the gear.
Sprocket is at the end of the opener rail closest to the garage door opening.
I am not a professional.
Move the ladder back under the carriage assembly.
If you are not confident in your ability to diagnose the problem call a local garage door service company.
Documenting how i repaired the garage door.
Genie chaindrive 550 garage door opener heavy duty chain drive system includes 2 3 button remotes wall console wireless keypad safe t beams model 2035 tkv black 4 6 out of 5 stars 279 194 98 194.
To do this put some lubricant on a piece of rag this use the rag to wipe the chain.
Soaking the chain in lubricant for a few hours will help loosen the rust.
Remember to not over tighten the chain.
The chain wraps around this sprocket as well as the gear and sprocket at the motor.
Some openers use a smooth sprocket rather than one with teeth.
Chain drive garage door openers have a sprocket that is attached at the top of the motor.
Place the chain around the front sprocket on the rail.