Table Of Contents; Safety Alert Symbol Review - Craftsman 139.53491SRT Owner's Manual

Contents
Safety alert symbol review ............................................ 2
Safety information, precautions, tools .......................... 3
Testing your garage door for binding & balance .......... 3
Carton inventory ........................................................... 4
Hardware inventory ....................................................... 5
Illustration of sectional door installation ..................... 6
Illustration of one-piece door installation ..................... 7
Assembly section - pages 8 - 11
Assemble the rail ........................................................ 8
Fasten rail to power unit ............................................ 10
Install the trolley ....................................................... 10
Attach the rail brackets ............................................. 11
Installation section - pages 12 - 27
Installation safety instructions .................................. 11
Determine the header bracket location
Sectional door ......................................................... 12
One-piece door ........................................................ 13
Install the header bracket .......................................... 14
Attach the rail to the header bracket ......................... 15
Safety reversing sensor information ......................... 16
Install the safety reversing sensor ............................. 17
Position the opener .................................................... 19
Hang the opener ........................................................ 20
Install the door control and connect all wires ........... 21
Electrical requirements ............................................. 22
Complete the safety reversing sensor installation .....22
Install the lights and lens .......................................... 23
Attach the emergency release rope and handle ......... 23
Fasten the door bracket (sectional door) ................... 24
Fasten the door bracket (one-piece door) .................. 25
Connect door arm to trolley (sectional door) ............ 26
Connect door arm to trolley (one-piece door) ........... 27
Adjustment section - pages 28 - 30
Travel limit adjustments ............................................ 28
Force adjustments ..................................................... 29
Test the safety reversing sensor ................................ 30
Test the safety reverse system .................................. 30
Operation safety instructions ...................................... 31
Care of your opener .................................................... 31
Maintenance schedule ................................................. 31
Operation of your opener ............................................ 32
Receiver & remote control programming ................... 33
Troubleshooting .......................................................... 34
Repair parts, rail assembly .......................................... 36
Repair parts, installation ............................................. 36
Repair parts, power unit .............................................. 37
Accessories ................................................................. 38
Index ........................................................................... 39
How to order repair parts ............................................ 40
Warranty ...................................................................... 40
Start by reviewing these important safety alert symbols:
When you see these Safety Symbols on the following pages, they will alert you to the possibility of serious injury
or death if you do not comply with the corresponding instructions. The hazard may come from something
mechanical or from electric shock. Read the instructions carefully.
Mechanical Electrical
When you see this Safety Symbol on the following pages, it will alert you to the possibility of damage to your
garage door and/or the garage door opener if you do not comply with the corresponding instructions. Read the
instructions carefully.
iiii iiii iiii iiii
This garage door opener is designed and tested to offer safe service provided it is installed, operated, maintained
and tested in strict accordance with the safety instructions contained in this manual.