Never, in any circumstance, should you ever attempt to adjust your garage door springs unless you are a trained professional.
Failure to respect this warning could result in permanent physical damage. Torsion springs are very high powered springs and without the proper training, you will not know how to adjust or work on them safely. Never release the garage door in the open position. If you have a broken spring and you don’t realize it, your garage door will crash down, resulting in injury or damage to anything underneath it. Regular maintenance checks are recommended to prevent personal injury and damage to the garage door.
Always start with the garage door closed to check your door balance. If the garage door starts to fall, never try to catch it with your hands or feet. Just let it fall. Never put your fingers in between the sections. To prevent pinching use handles or hinges to assist the door up or down. Springs counterbalance the weight of the door making the door seem as if it only weighs 10-15 pounds. If you have a broken spring, you will feel the weight of couple hundred pounds even on a lightweight door.
Keeping your door well balanced will not only make your home a safer place but will also keep your garage door operator running longer and quieter.