Craftsman 139.18489D User manual

3/4 HP
GARAGE DOOR OPENER
For Residential Use Only
Model • 139.18489D
Read and follow all safety rules and
operating instructions before first use
of this product.
Fasten the manual near the garage
door after installation.
Periodic checks of the opener are
required to ensure safe operation.
Owner’s Manual
ENGLISH
Sears Canada, Inc., Toronto, Ontario M5B 2B8
■Safety Precautions
■Assembly
■Installation
■Adjustment
■Maintenance
■Operation
■Troubleshooting
■Parts List

2
TABLE OF CONTENTS
When you see these Safety Symbols and Signal Words on
the following pages, they will alert you to the possibility of
serious injury or death if you do not comply with the
warnings that accompany them. The hazard may come
from something mechanical or from electric shock. Read
the warnings carefully.
When you see this Signal Word 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 cautionary statements that accompany it. Read
them carefully.
INTRODUCTION
Safety Symbol
and Signal Word Review
This garage door opener has been designed and tested to offer safe service provided it is installed, operated,
maintained and tested in strict accordance with the instructions and warnings contained in this manual.
Mechanical
Electrical
Introduction 2-7
Safety symbol and signal word review........................2
Preparing your garage door ........................................3
Tools needed...............................................................3
Planning ..................................................................4-5
Carton inventory..........................................................6
Hardware inventory .....................................................7
Assembly 8-11
Assemble the rail and install the trolley ......................8
Fasten the rail to the motor unit and
Install the idler pulley...................................................9
Install the belt and attach the belt cap retainer.........10
Set the tension ..........................................................11
Installation 11-26
Installation safety instructions....................................11
Determine the header bracket location .....................12
Install the header bracket..........................................13
Attach the rail to the header bracket.........................14
Position the opener ...................................................15
Hang the opener .......................................................16
Install the door control...............................................17
Install the lights .........................................................18
Attach the emergency release rope and handle .......18
Electrical requirements..............................................19
Install The Protector System®..............................20-22
Fasten the door bracket.......................................23-24
Connect the door arm to the trolley .....................25-26
Adjustment 27-29
Adjust the travel limits ...............................................27
Adjust the force .........................................................28
Test the safety reversal system.................................29
Test The Protector System®......................................29
Operation 30-34
Operation safety instructions.....................................30
Using your garage door opener ................................30
Using the wall-mounted Door Control .......................31
To open the door manually........................................31
Care of your garage door opener..............................32
Having a problem? ....................................................33
Diagnostic chart.........................................................34
Programming 35-36
To add or reprogram a hand-held remote control .....35
To erase all codes .....................................................35
3-Function Remotes..................................................35
To add, reprogram or change
a Keyless Entry PIN ..................................................36
Repair Parts 37-38
Rail assembly parts...................................................37
Installation parts ........................................................37
Motor unit assembly parts.........................................38
Accessories 39
Warranty 39
Repair Parts and Service 40

3
To prevent damage to garage door and opener:
• ALWAYS disable locks BEFORE installing and operating the
opener.
• ONLY operate garage door opener at 120V, 60 Hz to avoid
malfunction and damage.
To prevent possible SERIOUS INJURY or DEATH:
• ALWAYS call a trained door systems technician if garage
door binds, sticks, or is out of balance. An unbalanced
garage door may not reverse when required.
• NEVER try to loosen, move or adjust garage door, door
springs, cables, pulleys, brackets or their hardware, all of
which are under EXTREME tension.
• Disable ALL locks and remove ALL ropes connected to
garage door BEFORE installing and operating garage door
opener to avoid entanglement.
Preparing your garage door
Before you begin:
• Disable locks.
• Remove any ropes connected to garage door.
•Complete the following test to make sure your garage
door is balanced and is not sticking or binding:
1. Lift the door about halfway as shown. Release the
door. If balanced, it should stay in place, supported
entirely by its springs.
2. Raise and lower the door to see if there is any
binding or sticking.
If your door binds, sticks, or is out of balance, call a
trained door systems technician.
Tools needed
During assembly, installation and adjustment of the
opener, instructions will call for hand tools as illustrated
below.
Pliers
Wire Cutters
Claw Hammer
Hack Saw
Screwdriver
Adjustable End Wrench
Sockets and Wrench
1/2", 5/8", 7/16", 9/16"
and 1/4"
Drill
Tape Measure
2
1
Stepladder
Pencil
Drill Bits
3/16", 5/16"
and 5/32"
Carpenter’s
Level (optional)
Sectional Door
One-Piece Door

4
Safety Reversing Sensor
Header Wall
Access Door
— — — — — — — —
Safety
Reversing
Sensor
Gap between floor
and bottom of door
must not exceed 1/4" (6 mm).
Extension Spring
Horizontal and vertical reinforcement
is needed for lightweight garage doors
(fiberglass, steel, aluminum, door with
glass panels, etc.). See page 23 for details.
Support bracket &
fastening hardware
is required.
See page 16.
FINISHED CEILING
Motor unit
Rail
Wall-
mounted
Door
Control
OR
Torsion Spring
Vertical
Centerline
of Garage
Door
SECTIONAL DOOR INSTALLATION
Planning
Identify the type and height of your garage door. Survey
your garage area to see if any of the conditions below
apply to your installation. Additional materials may be
required. You may find it helpful to refer back to this page
and the accompanying illustrations as you proceed with
the installation of your opener.
Depending on your requirements, there are several
installation steps which may call for materials or hardware
not included in the carton.
• Installation Step 1 – Look at the wall or ceiling above
the garage door. The header bracket must be securely
fastened to structural supports.
• Installation Step 5 – Do you have a finished ceiling in
your garage? If so, a support bracket and additional
fastening hardware may be required.
• Installation Step 10 – Depending upon garage
construction, extension brackets or wood blocks may be
needed to install sensors.
• Installation Step 10 – Alternate floor mounting of the
safety reversing sensor will require hardware not
provided.
CLOSED POSITION
Header
Wall
Garage
Door
Header
Bracket
Trolley
Straight
Door
Arm
Emergency Release
Rope & Handle
Door
Bracket
Curved
Door
Arm
Garage
Door
Spring
Belt
Trolley
Stop Bolt
• Do you have an access door in addition to the garage
door? If not, Model 18752 Emergency Key Release is
required. See Accessories page.
• Look at the garage door where it meets the floor. Any
gap between the floor and the bottom of the door must
not exceed 1/4" (6 mm). Otherwise, the safety reversal
system may not work properly. See Adjustment Step 3.
Floor or door should be repaired.
SECTIONAL DOOR INSTALLATIONS
• Do you have a steel, aluminum, fiberglass or glass
panel door? If so, horizontal and vertical reinforcement
is required (Installation Step 11).
• The opener should be installed above the center of the
door. If there is a torsion spring or center bearing plate
in the way of the header bracket, it may be installed
within 4 feet (1.22 m) to the left or right of the door
center. See Installation Steps 1 and 11.
• If your door is more than 7 feet (2.13 m) high, see rail
extension kits listed on Accessories page.

5
Access
Door
Safety
Reversing Sensor
Safety
Reversing
Sensor
Gap between floor
and bottom of door
must not exceed 1/4" (6 mm).
Garage
Door
Header
Wall
Header
Bracket
Door
Bracket Straight
Door
Arm
Curved
Door Arm
Trolley
Emergency
Release
Rope &
Handle
Rail
Belt
Trolley Stop Bolt
CLOSED POSITION
Planning (Continued)
ONE-PIECE DOOR INSTALLATIONS
• Generally, a one-piece door does not require
reinforcement. If your door is lightweight, refer to the
information relating to sectional doors in Installation
Step 11.
• Depending on your door’s construction, you may need
additional mounting hardware for the door bracket
(Step 11).
Safety Reversing Sensor
Access
Door
FINISHED CEILING
Support bracket
& fastening
hardware is required.
See page 16.
Safety Reversing
Sensor
Header Wall
Gap between floor
and bottom of door must not exceed 1/4" (6 mm).
Wall-mounted
Door Control
Rail
Motor Unit
ONE-PIECE DOOR WITHOUT TRACK
CLOSED POSITION
Header
Wall
Header
Bracket
Trolley
Straight
Door
Arm
Emergency
Release
Rope & Handle
Door Bracket
Curved
Door
Arm
Garage
Door
Trolley Stop Bolt Belt
Rail
Without a properly working safety reversal system, persons
(particularly small children) could be SERIOUSLY INJURED or
KILLED by a closing garage door.
• The gap between the bottom of the garage door and the floor
MUST NOT exceed 1/4" (6 mm). Otherwise, the safety
reversal system may not work properly.
• The floor or the garage door MUST be repaired to eliminate
the gap.
ONE-PIECE DOOR WITH TRACK

6
Straight Door
Arm Section
Curved Door
Arm Section
Safety Labels
and
Literature
2-Conductor Bell Wire
White & White/Red
Idler Pulley
Motor Unit with 2 Light Lenses
Hanging Brackets
The Protector System®
(2) Safety Reversing Sensors
(1 Sending Eye and 1 Receiving Eye)
with 2-Conductor White & White/Black
Bell Wire attached
Door Bracket
SECURITY :
®
3-Function Remote Control (2)
Trolley
Safety Sensor
Bracket (2)
Rail
Center/Back
Sections
"U" Bracket
Rail
Front (header)
Section
Header Bracket
Belt Cap Retainer
Belt
LOCK LIGHT
Motion Detecting
Control Console Garage Door Monitor System
SECURITY :
®
Keyless Entry
Your garage door opener is packaged in one carton which
contains the motor unit and all parts illustrated below.
Accessories will depend on the model purchased. If
anything is missing, carefully check the packing material.
Parts may be stuck in the foam. Hardware for assembly
and installation is shown on the next page. Save the
carton and packing material until installation and
adjustment is complete.
Carton Inventory

7
Master
Link (2)
Idler Bolt (1)
Nut
3/8" (1)
Trolley Threaded Shaft (1)
Lock Washer
3/8" (1)
Lock Nut
1/4"-20 (2)
Wing Nut
1/4"-20 (2)
Carriage Bolt
1/4"-20x1/2" (2)
Handle
Nut 5/16"-18 (8)
Ring
Fastener (3)
Insulated
Staples (30)
Drywall Anchors (2)
Clevis Pin
5/16"x1" (1)
Rope
Carriage Bolt
5/16"-18x2-1/2" (2)
Lock Washer 5/16" (7)
Lag Screw
5/16"-9x1-5/8" (2)
Hex Bolt
5/16"-18x7/8" (4)
Clevis Pin
5/16"x1-1/4" (1)
Lag Screw
5/16"-18x1-7/8" (2)
Screw
6ABx1-1/4" (2) Screw 6-32x1" (2)
Clevis Pin
5/16"x1-1/2" (1)
Spacer (2)
Washer 5/8" (2)
Spacer (2)
Bolt 1/4"-20x2-1/2 (1)
Bolt 1/4"-20x1-3/4 (1)
Spring/Trolley Nut (1)
Hardware Inventory
Separate all hardware and group as shown below for the assembly and installation procedures.
ASSEMBLY HARDWARE
INSTALLATION HARDWARE

FRONT RAIL
(TOP)
KEEP LARGER
HOLE ON TOP
8
ASSEMBLY STEP 1
Assemble the Rail & Install the Trolley
To avoid installation difficulties, do not run the garage
door opener until instructed to do so.
Front Rail
(TO DOOR)
Window
Cut-Out
Screwdriver
Idler
Pulley
Hole
Tab s
Back Rails
(TO MOTOR UNIT)
Trolley
Tapered
End
Tapered
End
Inner Trolley
Wear Pads
Outer Trolley
Tapered
End
Tapered
End
To prevent INJURY from pinching, keep hands and fingers
away from the joints while assembling the rail.
The front rail has a cut out “window” at the door end (see
illustration). The hole above this window is larger on
the top of the rail than on the bottom. A smaller hole
3-1/2" (8.9 cm) away is close to the rail edge. Rotate the
back rail so it has a similar hole close to the opposite
edge, about 4-3/4" (12 cm) from the far end.
1. Remove the straight door arm and hanging bracket
packaged inside the front rail and set aside for
Installation Step 5 and 12. NOTE: To prevent INJURY
while unpacking the rail carefully remove the straight
door arm stored within the rail section.
2. Align the rail sections on a flat surface as shown and
slide the tapered ends into the larger ones. Tabs along
the side will lock into place.
3. Place the motor unit on packing material to protect the
cover, and rest the back end of the rail on top. For
convenience, put a support under the front end of the
rail.
4. As a temporary stop, insert a screwdriver into the hole
10" (25 cm) from the front end of the rail, as shown.
5. Check to be sure there are 4 plastic wear pads inside
the inner trolley. If they became loose during shipping,
check all packing material. Snap them back into position
as shown.
6. Slide the trolley assembly along the rail from the back
end to the screwdriver.

9
To avoid SERIOUS damage to garage door opener, use ONLY
those bolts/fasteners mounted in the top of the opener.
ASSEMBLY STEP 2
Fasten the Rail to the Motor Unit
• Insert a 1/4"-20x2-1/2 bolt, washer and spacer into the
cover protection bolt hole on the back end of the rail as
shown. Install lower spacer and washer then tighten
securely with a 1/4"-20 lock nut. Do NOT over tighten.
• Remove the bolt and lock nut from the top of the motor
unit.
• Attach spreaders to the “U” bracket by snapping them
into place.
• Place the “U” bracket, flat side down onto the bolt,
mounted on the motor unit and align the bracket hole
with the bolt hole. Fasten with the previously removed
bolt and lock nut.
• Align the rail assembly with the top of the motor unit.
Slide the rail end onto the “U” bracket, all the way to the
stops that protrude on the top and sides of the bracket.
ASSEMBLY STEP 3
Install the Idler Pulley
• Lay the belt beside the rail, as shown. Grasp the end
with the hooked trolley connector and pass
approximately 12" (30 cm) of belt through the window.
Keep the ribbed side toward the rail, and allow it to hang
until Assembly Step 5.
• Remove the tape from the idler pulley. The inside center
should be pre-greased. If dry, regrease to ensure proper
operation.
• Place the idler pulley into the window as shown.
• Insert the idler bolt from the top through the rail and
pulley. Tighten with a 3/8" lock washer and nut
underneath the rail until the lock washer is compressed.
• Rotate the pulley to be sure it spins freely.
• Insert a 1/4"-20x1-3/4 bolt into the trolley stop hole in
the front of the rail as shown. Tighten securely with a
1/4"-20 lock nut.
Motor Unit
Sprocket
"U" Bracket
Bolt
SLIDE RAIL TO STOPS
ON TOP AND SIDES
OF BRACKET
Cover
Protection
Bolt Hole
Lock Nut
Lock Nut
Bolt
Spacer
Spacer
Washer
Washer
Idler
Pulley
Trolley
Stop Hole
Bolt
Trolley
Connector
Pulley
Rail
Bolt
Nut Washer
Lock Washer
3/8"
Nut 3/8"
Idler
Bolt Screwdriver
Idler Pulley
Grease
Inside Pulley
Lock
Nut
Bolt 1/4"-20x2-1/2
Spacer
Washer 5/8" Lock Nut 1/4"-20
HARDWARE SHOWN ACTUAL SIZE
Nut 3/8" Lock Washer 3/8"
Idler Bolt Lock Nut 1/4"-20
Bolt 1/4"-20x1-3/4"
HARDWARE SHOWN ACTUAL SIZE

ASSEMBLY STEP 4
Install the Belt
and Attach the Belt Cap Retainer
1. Pull the belt around the idler pulley and toward the
trolley. The ribbed side must contact the pulley.
2. Hook the trolley connector into the retaining slot on the
trolley as shown.
3. With the trolley against the screwdriver, dispense the
remainder of the belt along the rail length toward the
motor unit and around the sprocket. The sprocket teeth
must engage the belt.
4. Check to make sure the belt is not twisted and the
FLAT side of the trolley threaded shaft is facing the rail.
Connect the trolley threaded shaft with the master link,
as illustrated:
• Push pins of master link bar through holes in end of
belt and trolley threaded shaft.
• Push master link cap over pins and past pin notches.
• Slide clip-on spring over cap and onto pin notches
until both pins are securely locked in place.
5. Insert the trolley threaded shaft through the hole in the
trolley. Be sure the belt is not twisted and the FLAT
side of the trolley threaded shaft faces the rail.
6. Hold the belt at the trolley shaft as you thread the
spring nut by hand onto the shaft until finger tight
against the trolley. Do not use any tools.
7. Remove the screwdriver.
8. Position the belt cap retainer over the motor unit
sprocket as shown and fasten to the mounting plate
with 8x3/8" hex screws provided.
10
To avoid possible SERIOUS INJURY to fingers from moving
garage door opener:
• ALWAYS keep hand clear of sprocket while operating opener.
• Securely attach sprocket cover BEFORE operating.
Trolley
Connector
Idler Pulley
Retaining
Slot
Hole
Master Link
Clip-On Spring
Master Link Cap
Trolley
Threaded
Shaft
Master
Link Bar
Pin
Notch
Hex Screw 8x3/8"
HARDWARE SHOWN ACTUAL SIZE
Spring/Trolley Nut
Spring Nut
Belt Cap
Retainer
Mounting
Plate
Motor Unit
Sprocket
Hex Screws
#8x3/8"