Attach The Rail Brackets; Installation Section - Pages 12 - 27 Installation Safety Instructions - Craftsman 139.53491SRT Owner's Manual

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Assembly Step 3
Attach
the Rail Brackets
• Align rail brackets to end of rail assembly, as shown.
• Insert two 1/4"-20 x 5/8" hex screws and lock nuts.
Tighten securely with a 7/16" socket.
Rail
Brackets
1/4"-20
Lock Nuts
Hardware Shown Actual Size
1/4" - 20
1/4" - 20 x 5/8"
Lock Nut
1/4"-20x5/8
Hex
Screws
You have now finished assembling
your garage door opener. Please read the following
warnings
before proceeding
to the installation
section:
IMPORTANT INSTALLATION INSTRUCTIONS
To reduce the risk of severe injury or death to persons:
1. READ AND FOLLOW ALL INSTALLATION
INSTRUCTIONS
2. Install
only on a properly
balanced
and lubricated
garage
door. An improperly
balanced
door may not
reverse
and could result
in severe
injuly
or death.
Repairs
to cables,
spring
assemblies
and other
hardware
must
be made
by a professional
service
person
before
installing
opener.
3. Disable all locks and remove all ropes connected to the garage door before installing
the opener. Ropes
connected
to a garage door can cause entanglement
and death.
4. If possible, install door opener 7 feet or more above floor with the emergency
release handle mounted 6
feet above the floor.
5. Do not connect the opener to power source until instructed
to do so.
6. Locate the Door Control within sight of the door at a minimum
height of 5 feet where small children
cannot reach and away from all moving parts of the door.
7. Install the User Safety Instruction
Label on the wall adjacent
to the control button and the Maintenance
Instruction
Label in a prominent
location on the inside of the garage door.
8. Upon completion
of the installation,
the door must reverse when it comes in contact with a one-inch high
object or a 2x4 laid flat on the floor.
9. Do not wear watches,
rings or loose clothing while installing
or servicing an opener. Jewelry or loose
clothing can be caught in the mechanism
of the garage door or the opener.
11

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