Question: how to manually open a roller garage door?
Answer: Step 1: Pull the red cord. ...  Step 2: Lift the garage door. ...  Step 3: Remove your car. ...  Step 4: Close the garage door. ...  Step 5: Pull the red cord. ...  Step 1: Pull the red string. ...  Step 2: Lift the garage door. ...  Step 3: Push the lever back to parallel with the floor.