Craftsman 139.53661SRT1 Garage Door Opener User Manual

Installation Step 10
Install the Safety Reversing Sensor
' Figures 2 and 3 show assembly of brackets and
i "C" wrap based on the recommended installation of
the sensors as shown on page 21.
However, Figures 4 and 5 are vadetions which may
fityour installation requirements better. Make sure
the wraps end brackets are aligned so the
sensors will face each other across the garage
Fasten the "C" wraps to the mounting brackets
having square holes, using the hardware shown
in Figure 2.
Connect each assembly to a slotted bracket, using
the hardware shown in Figure 3.
Note the alignment of the brackets for left and
right aides of the door.
Finger tighten the lock nuts.
Use bracket mounting holes as a template to
locate and ddll (2) 3/16' diameter pilot holes on
both sides of the garage door, 4"-6" above the
floor but not exceeding 6: (See warning on
page 21.)
Attach bracket assemblies with 1/4"x1-1/2" lag
screws as shown in Figure 3.
Adjust dght and left side bracket assemblies to the
same distance out from the mounting surface.
Make sure all door hardware obstructions are
dealed. Tighten the nuts securely.
Figure 2
Figure 3
Mo_ Brac_l
#10 o_12x :_gS" #10x32
SOtew LockNut
Hardware Shown Actual Size
Lag_ St=paB
114"- 20 x 1i'Z'
Figure 4
Alternate Wall Mount
Figure 5
Alternate Floor Mount