Craftsman 139.53963SRT User's Manual | Page 6

Craftsman Garage Door Opener User's Manual - 139.53963SRT.
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6

Safety Reversing Sensor

Horizontal and vertical reinforcement

is needed for lightweight garage doors

(fiberglass, steel, aluminum, door with glass panels, etc.).

See page 24 for details.

Support bracket & 

fastening hardware

is required.

See page 20.

 — — —        — — —        — —

Door Center

Header Wall

Safety

Reversing

Sensor

Floor must be level

across width of door

FINISHED CEILING

Extension Spring

Torsion Spring

Access Door

OR

Header

Bracket

Rail

Bracket

Trolley

Straight

Door

Arm

Emergency

Release

Rope & Handle

Door 

Bracket

 

Garage

Door

Curved

Door

Arm

Garage

Door

Spring

Header

Wall

Rail Assembly

Closed Position

SECTIONAL Door Installation  

Before you begin, survey your garage area to
see whether any of the conditions below apply
to your installation.

Based on your particular requirements, there are several
installation steps which might call for materials and/or
hardware not included in the carton.

• Step 1, page 12 – Look at the wall or ceiling above the

garage door. The header bracket must be securely
fastened to structural supports.

• Safety reversing sensor, page 16 – Depending upon

garage construction, extension brackets or wood blocks
may be needed to fasten sensors to mounting locations.

• Step 4, page 17 – Floor mounting of the safety reversing

sensor will require hardware not provided.

• Step 6, page 20 – Do you have a finished ceiling in your

garage? If so, a support bracket and additional fastening
hardware may be required.

• Step 12, page 24 – Do you have a steel, aluminum,

fiberglass or glass panel door? If so, horizontal and
vertical reinforcement is required.

• Look at the garage door where it meets the floor. It

must close on the floor all the way across. Otherwise,
the safety reverse system may not work properly. 
See
page 30. Floor or door should be repaired.

You may find it helpful to refer back to this page as you proceed with the installation of your opener.

• The opener can be installed within 4 feet of the left or

right of the door center if there is a torsion spring or
center bearing plate in the way of the header bracket or
door bracket area. If your door has extension springs,
the opener must be installed in the center of the door.
See pages 12 and 24.

• Do you have an access door in addition to the garage

door? If not, Model 53702 Emergency Key Release is
required. See page 38.

• If your door is more than 7 feet high, see the rail

extension kits listed on page 38.

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