
25
1/2 HP Chain Drive Garage Door Opener
8. Bring the straight door arm section and curved door arm section together and secure with two bolts
(M6-45), two spring washers and two nuts (M8):
9. Release/lower the trolley safety release lever into the horizonal position.
10. Feed the free end of the emergency release rope through the end of the trolley safety release lever and
tie a knot in both the ends of the rope. The knob should be at least six feet above the garage floor. Take
the slack out of the rope with an additional knot.