Craftsman 139.53910D Owner's Manual page 24

1/2 hp 315mhz garage door opener
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ONE-PIECE
D OORS
Please read and comply with the warnings and
reinforcement instructions on the previous page.
They apply to one-piece doors also.
• Center the door bracket on the top of the door, in
line with the header bracket as shown. Mark either
the left and right, or the top and bottom holes.
• Drill 5/16" pilot holes and fasten the bracket with
hardware supplied.
If the door has no exposed framing, drill 3/16" pilot
holes and fasten the bracket with 5/16"x1-1/2" lag
screws (not provided) to the top of the door.
NOTE: The door bracket may be installed on the top
edge of the door if required for your installation.
(Refer to the dotted line optional placement drawing.)
Drill 3/16" pilot holes and substitute 5/16"xl- 1/2" lag
screws (not provided) to fasten the bracket to the
door.
HARDWARE
SHOWN ACTUAL
SIZE
©
©
Nut 5/16"-16
Lock Washer
5/16"
Carriage Bolt
5/16"-18x2-1/2"
Header Wall
2x4
Header
Bracket
Optional
Placement
of Door
Bracket
Door
Bracket
Vertical
of Garage
Door
Horizontal
and vertical
reinforcement
is needed for
lightweight
garage
doors
(fiberglass,
aluminum,
steem,
door with
glass panel, etc.).
(Not Provided)
For a door with no exposed
framing,
or for the optional installation, use
5/16"x1-1/2"
lag screws (Not Provided)
to fasten door bracket,
®
Lock
Washer
,
5/16"
Top of Door
(inside Garac
Top Edge
of Door
Optional
Placement
Carriage Bolt
_[
5/16"-18x2-1/2"
24

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