Craftsman 139.18057 Owner's Manual

2Introduction Pages 2-7Safety symbol and signal word review........................2Preparing your garage door ........................................3Tools needed ...............................................................3Planning ..................................................................4-5Carton inventory ..........................................................6Hardware inventory .....................................................7Assembly Pages 8-11Assemble the rail and install trolley.............................8Fasten rail to motor unit and install idler pulley ..........9Install chain/cable and attach the sprocket cover .....10Tighten the chain .......................................................11Installation Pages 11-27Installation safety instructions....................................11Determine the header bracket location................12-13Install the header bracket..........................................14Attach the rail to the header bracket.........................15Position the opener ...................................................16Hang the opener .......................................................17Install the door control...............................................18Install the light............................................................19Attach the emergency release rope and handle .......19Electrical requirements..............................................20Install the safety reversing sensor .......................21-23Fasten the door bracket .......................................24-25Connect the door arm to the trolley .....................26-27Adjustment Pages 28-30Adjust the travel limits ...............................................28Adjust the force .........................................................29Test the safety reversal system.................................30Test the safety reversing sensor ...............................30Operation Pages 31-34Operation safety instructions.....................................31Using your garage door opener ................................31Using the wall-mounted Door Control .......................32To open the door manually........................................32Care of your garage door opener..............................33Having a problem? ....................................................34Programming Pages 35-36To add a hand-held remote control ...........................35To erase all codes .....................................................353-Function Remotes ..................................................35To add or change a Keyless Entry PIN .....................36Repair Parts Pages 37-38Rail assembly parts...................................................37Installation parts ........................................................37Motor unit assembly parts .........................................38Accessories 39Warranty 39Service Numbers 40TABLE OF CONTENTSWhen you see these Safety Symbols and SignalWords on the following pages, they will alert you tothe possibility of serious injury or death if you donot comply with the warnings that accompany them.The hazard may come from something mechanicalor from electric shock. Read the warnings carefully.When you see this Signal Word on the followingpages, it will alert you to the possibility of damage toyour garage door and/or the garage door opener ifyou do not comply with the cautionary statementsthat accompany it. Read them carefully.MechanicalElectricalWARNINGCAUTION WARNINGWARNINGWARNINGWARNINGWARNINGCAUTION WARNINGWARNINGINTRODUCTIONSafety Symboland Signal Word ReviewThis 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.