My garage door opens 3-4 inches only. When I disable the opener, it is very heavy to raise. When engaged and another person holds button down, the door will rise if I assist it by hand. It will lower itself normally with the button control. Also, the dials at the ends of the torsion spring (I assume I am correct in calling it the torsion spring) are not equal. The right side (looking from inside) is set at 16 and the left is at 11. Is that normal? If they were set at same number, would the door operate normally and if so, is it safe and easy to reset the left side?
Torsion Spring on Craftsman 3/4 HP garage door opener
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