Craftsman 139.53671SRT3 Owner's Manual

GARAGE DOOR OPENEROwner’sManualModel No.139.53661SRT3139.53671SRT3139.53672SRT3139.53673SRT3139.53674SRT2139.53677SRT3For Residential UseOnly Caution:

Assembly Step 4Install the Chain/Cable &Attach the Sprocket Cover 10To attach the sprocket cover:• Insert the back tab in the opener slot. Squeez

• Spin the inner nut and lock washer down thethreaded shaft, away from the trolley.• To tighten the chain, turn outer nut in the directionshown. As yo

• Open your door to the highestpoint of travel as shown. Drawan intersecting horizontal lineon the header wall 2" abovethe high point. This heig

• Close the door and mark theinside vertical centerline ofyour garage door. Extend theline onto the header wallabove door.If headroom clearance ismini

14 You can attach the header bracket either to thewall above the garage door, or to the ceiling.Follow the instructions which will work best foryour

HeaderBracketCablePulleyBracketTemporarySupportHeader WallGarageDoorThe Chamberlain Group, Inc.Attach Tee Rail to Header Bracket2/4/92 - 4/9/92

Installation Step 4Position the OpenerFollow instructions which apply to your doortype as illustrated.To prevent damage to steel, aluminum,fiberglass

Installation Step 5Hang the OpenerTwo representative installations are shown.Yours may be different. Hanging brackets shouldbe angled, Figure 1, to pr

Installation Step 6Install the Door Control 18Locate the door control within sight of the doorat a minimum height of 5 feet where smallchildren cann

Install the lights• Install a 75 watt maximum light bulb in the socket.The light will turn ON and remain lit forapproximately 4-1/2 minutes when power

Start by reviewing these important safety alert symbols 2Contents PageA review of safety alert symbols...2You'll n

To reduce the risk of electric shock, your garagedoor opener has a grounding type plug with a thirdgrounding pin. This plug will onlyfit into a groun

The safety reversing sensor mustbe connectedand aligned correctly before the garage dooropener will move in the down direction. This is arequired safe

Installation Step 10Install the Safety Reversing Sensor Figures 2 and 3 show assembly of brackets and "C" wrap based on the recommended ins

• Center each sensor unit in a "C" wrap with lensespointing toward each other across the door (seeFigure 6). • Secure sensors with the hardw

Installation Step 11Fasten Door Bracket Follow instructions which apply to your doortype as illustrated below or on page 25.To prevent damage to stee

All ONE-PIECE Door Installation Procedure• Center the bracket on the top of the door, in linewith the header bracket as shown. Mark holes.• Drill 5/16

Installation Step 12 Connect Door Arm to TrolleyFollow instructions which apply to your doortype as illustrated below and on page 27.Make sure garage

All ONE-PIECE DoorsAdjustment Procedures for One-Piece DoorsOpen Door Adjustment:Decrease UP limit• Turn the UP limit adjustment screw counter-clockwi

Adjustment Step 1Adjust the UP and DOWN LimitsDo not make any limit adjustments until thesafety reversing sensors are completelyinstalled. 28Limit ad

Adjustment Step 2Adjust the ForceToo much force on the door will interfere withthe proper operation of the safety reversesystem. The door might not re

During assembly, installation and adjustment of the opener, instructions will call for hand tools shown below.3To avoid damage to the garage door ando

Adjustment Step 4Test the Safety Reverse SystemTest: • Place a one-inch board (or a 2x4 laid flat) on thefloor, centered under the garage door.• Oper

Once a MonthManually operate door. If it is unbalanced orbinding, call for professional garage door service.Check to be sure door opens & closes f

To open the doormanually: The door should befully closed if possible.Pull down on the redemergency releasehandle and lift the doormanually. Toreconne

SRT (learn)ButtonIndicatorLightBACKPANELKGKG1397513975123SECURITY✚Garage Door OpenerCode programming instructions arealso located on the opener

1. Does the opener have electric power? Plug a lamp into the outlet. If it doesn't light,check the fuse box or the circuit breaker. (Some outlet

Having a Problem? (continued)Situation Probable Cause & SolutionThe door reverses forno apparent reasonand opener lightsdon't blink:1. Is som

Repair PartsRail Assembly PartsInstallation Parts 36KEY PARTNO. NO. DESCRIPTION1 1A995 Master link kit2 41A3489 Complete trolley assembly3 1B3117 T-

Repair PartsOpener Assembly Parts121081112131415161943Exploded View SEARS 315-699 (Yellow Disk #3)Models 53315, 53415, 53615, 53625 & 536994/3/89

Sears offers many useful accessories for your garage door opener. They are illustrated below withSears model numbers and descriptions.139.53684139.53

IndexAccess Door/Outside Key Release Accessory...4, 5Chain

4 Safety Reversing SensorHorizontal and vertical reinforcementis needed for lightweight garage doors(fiberglass, steel, aluminum, door with glass p

SEARS WARRANTYFULL 90-DAY WARRANTY ON GARAGE DOOR OPENERFor 90 days from the date of purchase, Sears will repair this Garage Door Opener, free of char

5Before you begin, survey your garage area tosee whether any of the conditions below applyto your installation.Based on your particular requirements,

6Straight DoorArm SectionCurved DoorArm SectionSafety LabelsandLiteratureCablePulley BracketChain and Cablein Dispensing CartonHeader BracketUPCEILING

7Separate all hardware from the packages in the rail carton and the opener carton, asshown below, for the assembly and installation procedures.

8 Assembly Step 1Assemble the T-rail & Attach the Cable Pulley Bracket• Align the 3 T-rail sections on a flat surface exactlyas shown. The end se

Assembly Step 2Install the Trolley on the T-rail• Place the opener on packing material to protectthe cover. For convenience, put a support underthe ca