After that attach the motor to the brackets and verify the rail is perfectly horizontal with a bubble level.
How to install garage door opener on garage door.
Set it securely on top of a stepladder so it s conveniently close to the ceiling.
Fix the door bracket in place.
Then install the motor brackets.
Lift the motor compartment into place on the ceiling and attach the rail and carriage to the bracket on the door.
To install a garage door opener first assemble the rail carriage pulley and motor compartment according to the instructions.
Place the opener on a ladder and use scrap lumber to get it at the height you need.
The garage door opener mounting bracket also called the header bracket secures the carriage tube to the wall above the door.
Align the opener s rail with the center of the garage door.
After that start installing the sensors.
Lift the power unit.
Follow the manufacturer s instructions to assemble the opener and mount the rail to the header bracket above the door.