Unless you have experience in changing a garage door spring, you should have them changed by a qualified garage door mechanic.
Unless you have experience in changing a garage door spring, you should have them changed by a qualified door mechanic. Keep in mind that the spring / counterbalance system is engineered to lift doors weighing in excess of three hundred pounds! A tremendous amount of torque is generated by a torsion spring and should be avoided at all cost by an inexperienced person. Extension springs carry a great deal of potential energy and many people have been injured un-necessarily when making a wrong move.
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