Attach The Rail Brackets; Assembly - Craftsman 139.53993D Owner's Manual

ASSEMBLY STEP 3
Attach the Rail Brackets
• Align rail brackets to end of rail assembly, as shown.
• Insert two 1/4"-20x7/16" hex bolts. Tighten securely
with a 3/8" socket.
You have now finished assembling your garage door
opener. Please read the following warnings before
proceeding to the installation section.
Rail Brackets
Hex Bolt
1/4-20x7/16"
Hex Bolt
1/4-20 x 7/16"
HARDWARE SHOWN ACTUAL SIZE
Hex bolt 1/4-20x7/16"
INSTALLATION
IMPORTANT INSTALLATION INSTRUCTIONS
To reduce the risk of SEVERE INJURY or DEATH:
1. READAND FOLLOWALL INSTALLATION WARNINGSAND
INSTRUCTIONS.
2. Install garage door opener only on properly balanced and
lubricated garage door. An improperly balanced door may
not reverse when required and could result in SEVERE
INJURYor DEATH.
3. ALL repairs to cables, spring assemblies and other
hardware MUST be made by a trained door systems
technician BEFORE installing opener.
4. Disable ALL locks and remove all ropes connected to
garage door BEFORE installing opener to avoid
entanglement.
5. Install garage door opener 7 feet (2.13 m) or more above
floor.
6. Mount emergency releasehandle 6 feet (1.83 m) above
floor.
7. NEVERconnect garage door opener to power source until
instructed to do so.
8. NEVERwear watches, rings or loose clothing while
installing or servicing opener. They could be caught in
garage door or opener mechanisms.
9. Install wall-mounted garage door control:
• within sight of the garage door.
• out of reach of children at minimum height of 5 feet
(1.5 m).
• away from ALL moving parts of the door.
10. Placeentrapment warning label on wall next to garage
door control.
11. Place manual release/safety reverse test label in plain
view on inside of garage door.
12. Upon completion of installation, test safety reversal
system. Door MUST reverse on contact with a 1-1/2"
(3.8 cm) high object (or a 2x4 laid flat) on the floor.
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