本帖最后由 kingsnake 于 2011-9-24 10:04 编辑 " _$ F& E& w8 p9 H0 a) [9 l $ Z, N4 D* |' V. BAdjust the up and down controls on the opener housing with your screwdriver. You'll see the adjustable knob on the back of the garage door opener. Turn it a quarter of a turn either clockwise or counterclockwise to adjust for door height. If the door doesn't go all the way down, you need to turn the up/down knob counterclockwise. If it doesn't go all the way up, you need to turn it clockwise。