Those are the two blue screws.
Sears garage door opener chain not moving.
The chain got loose and popped off the gear.
Also the garage door slides along two door rails on either side of the garage.
Maybe you have a broken torsion spring or the door is too heavy.
Place a level on these and the rail to check to see if they are level.
2 if it is getting power then disconnect the door and then see if the chain will move.
If the chain has come off you will need to loosen the chain tension place the chain back over the sprocket and tighten it to the correct tension.
If the chain was installed too tightly on the garage door opener it can make opening the door more difficult for the automatic opener.
Activate the garage door opener with the emergency release still pulled to see if the trolley moves.
I am not a professional.
Turn them to clockwise to max and try again.
A broken chain or belt can also prevent the trolley from moving.
Your user manual should have details on how to perform this but usually there is a screw you adjust on the trolley that controls the tension.
If your garage door opener s motor runs but the chain doesn t move the gear and sprocket assembly might be broken or worn.
Whether you re updating an old garage or repairing a garage door opener that s been on the fritz for too long a new opener can help you get things moving.
If the trolley doesn t move when the motor runs you may need to replace the gear and sprocket assembly or the drive and worm gears.
This repair guide and video show how to replace a chain drive garage door opener gear and sprocket assembly.
3 if the chain still doesn t move check the force settings on the motor head.
If the motor hums but the chain doesn t move that indicates a problem with the motor.
If the gear becomes too worn it will no longer be able to move the chain.
Some problems are associated with the actual installation of the garage door opener.
If the rail system is not perfectly level the chain can eventually bind up in the process of working the door.
Sears carries the latest models from top brands like craftsman chamerlain and liftmaster each featuring durable parts and quality craftsmanship specially designed to last for years to come.
