Garage door cables can be adjusted by the home handyman with a little bit of patience and a few simple hand-tools. Adjusting the garage door cables and the springs is a typical do-it-yourselfer's kind of a job. Because the garage door springs can be somewhat tricky to manage and are very dangerous things to adjust incorrectly, you will need to ask a friend to help you. It is never a good idea to work alone when any number of things can go wrong that could take your life without immediate first aid being rendered.
Step 1 - Start The Task
To make the garage door rise with much the same ease as it did when it was first installed, your first task is to release the springs by using the clamp to the door roller. Do this at the lowest point.
Step 2 - Check the Pulleys
Once this is accomplished you need to make sure that the pulleys don’t need replacing.
Step 3 - Adjust the Springs
You can now adjust the springs to a tighter setting by moving the S hook higher. Make sure you adjust it by placing it into the hole higher on the track.