Craftsman 139.53993D Garage Door Opener User Manual


 
ASSEMBLY STEP 1
Assemble the Rail
To avoid installation difficulties, do not run the
garage door opener until instructed to do so.
1. Open the rail carton and remove the contents onto a
level work surface. Keep it clean and free of debris
while you are working.
2. Identify the rail sections and orient the sections on a
flat surface as shown. The back rail has a black gear
on one end. The header rail has a black plastic rack
inside the rail on the screw. The remaining section is
the center rail.
NOTE: Use caution when handling the center rail
section. The screw can slip out if the section is tipped up
too far.
Remove Cardboard Packing
To prevent INJURYfrom pinching, keephandsand fingers
awayfrom the joints while assembling the rail.
HARDWARE SHOWN ACTUAL SIZE
Hex bolt 1/4-20x7/16"
Hanging Brackets
Rail Support Braces
Straight
Header Rail Brackets
Rail Assembly
Rail Assembly ?_
(_ Remove Cardboard Packing
Sprocket Coupling
Remove
Cardboard
Packing
Back
Hex Bolts
1/4-20x7/16"
Hex Bolts
1/4-20x7/16"
Hex Bolts
1/4-20x7/16"
Header Rail