Of slack from the rail to the chain check your manual.
Garage door opener belt broke.
If you re looking for an easy diy then this might be for you.
You may have a chamberlain liftmaster garage door opener with a broken belt.
Over tightening the chain will put excess wear and tear on the shaft and gears.
Most chain drive openers suggest you tighten the chain so there s about 1 4 in.
This can be easily replaced by a garage door service technician.
It s super easy to.
Garage door won t open all the way.
If the garage door doesn t budge at all it s probably a power issue.
The gear and sprocket assembly is inside the cover of the garage door opener motor.
Start by replacing the batteries in your remote.
If you need to replace the belt in your belt drive garage door opener you might be surprised by how simple the task is.
Next check to see if the opener has become unplugged.
The most common cause of a chain being loose and appearing broken is a broken gear and sprocket.
As long as you have a guide to follow be it the one below or the one from your actual owner s manual you should not have too tough of a time repairing or replacing the belt.