1. Put the door in the down position.
  2. Turn off and unplug the garage door opening mechanism (if any).
  3. Place C-clamp on the track of garage doors just above the bottom roller to keep door.
  4. Find adjustment of collar or cone on the central shaft. The collar has a set screw that locks the spring tension on a central shaft
  5. Insert a metal rod into one of the holes of collar adjustment. This keeps the collar in place, so that you can loosen the set screw.
  6. Check the set screw, insert it into the flat position in the mine before adjusting. Flat position holds the screw more reliably.
  7. Hold the adjusting stock in position, loosen the set screw.
  8. Turn the collar with a barbell with a pitch 1/4 turn to the right or to the left or tighten or loosen the spring. Write down how many it turns accomplishments so that do the same thing with the other spring.
  9. Pull out the spring so that it does not delay the work. This is done by clicking on the rod that holds the spring tension in the direction from the center to the door. Be careful to avoid slipping of the rod from the hole.
  10. Hold the collar in the new position and tighten the set screw to fix. Be sure to note whether the set screw in the rod.
  11. Repeat the procedure on the second spring. Both springs must be adjusted equally.
  12. Repeat these steps until placing of adjustment collar on the central shaft.
  13. Find holes and screws that hold the torsion spring on the spot; that mechanism should have 2 set screws.
  14. Put one tension rod in the first hole to keep tight collar
  15. Loosen the set screws slowly when there is tension.
  16. Place the second tension rod to a different hole in the collar.
  17. Slide the collar to the right or to the left to tighten or loosen the spring.
  18. Remove one of the rods after proper adjustment.
  19. Tighten the set screws and at the same time firmly hold the remaining tension rods.
  20. Remove the remains of the rod.
  21. Lubricate the spring with a light engine oil or white lithium grease. If oil is used, it should be enough to penetrate between the coils and do not drip onto the floor or the door. Do not use any oil such as WD-40, as they usually dried metal, thus causing unwanted friction. The same rule applies to the rollers with metal balls, it is applied directly on the bearings. Lubrication must be done every six months.