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The manual emphasizes safety alert symbols, mechanical and electrical warnings, proper tool use, and correct handling to prevent injury. It includes guidance for assembling components, installing sensors and trolley systems, adjusting travel limits and force, testing reversing performance, troubleshooting common issues, and using a parts list while complying with UL 325 regulations effective January 1, 1993.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":35,"@type":76,"position":81},"https://docshare.wps.com/document/healthcare/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/owners-manual-craftsman-garage-door-opener/646670/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/owners-manual-craftsman-garage-door-opener/646670.png","ImageObject",300,407,{"name":92,"@type":93},"Grenda","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-11-12","2026-10-23",true,{"@type":102,"interactionType":103,"userInteractionCount":56},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What safety warnings must be followed before using the opener for the first time?","Question",{"text":112,"@type":113},"Read and follow all safety rules and operating instructions before first use. The manual warns about serious injury or death risks from mechanical hazards and electric shock, and about damage risks if instructions are not followed.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"What should be done if the garage door binds, sticks, or is out of balance?",{"text":117,"@type":113},"Call for professional garage door service if the door binds, sticks, or is out of balance. The manual warns that unbalanced doors may not reverse and can cause serious injury or death.",{"name":119,"@type":110,"acceptedAnswer":120},"How can you verify the door is balanced before beginning installation?",{"text":121,"@type":113},"Lift the door about halfway and release it; it should stay in place supported by its springs. Then raise and lower the door to check for binding or sticking.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},646670,1792778951,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":34,"category_name":35,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":56,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":36,"language":139,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":67,"update_tm":143,"read_time":144,"preview_page_count":4},7971474921005,"https://ap-avatar.wpscdn.com/davatar_29158cc5080c5b710cf443261637dec0","Owner's  \nManual  \nModel No.139.53335SRT3139.53645SRT3139.53646SRT2139.53648SRT2139.53650SRT139.53660SRT1139.53834SRT3  \nCRAFTSMANGARAGE DOOR OPENER  \nFor Residential UseOnly  \nCaution:  \n■ Safety Precautions  \nRead and follow allsafety rules andoperating instructionsbefore first use of thisproduct.  \n■ Assembly  \n■ Installation  \n■ Adjustment  \n■ Care and Maintenance  \n■ Operation  \nFasten the manualnear the garage doorafter installation.  \n■ Troubleshooting  \n■ Parts List  \nComplies with UL 325  \nregulations effective  \nJanuary 1,1993  \nContents  \nPage  \nPage  \nContents  \nInstall the light and len………………………………………………………………19  \nA review of safety alert symbols………………………………………2  \nAttach emergency release rope and handle…………………19  \nYou'l need tools……………………………………………………………………3  \nElectrical requirememt……………………………………………………………20  \nSafety infomation regarding garage door iocks  \nand ropes………………………………………………………………………………3  \nSafety reversing sensor infomation…………………………………21  \nTesting your garage door for sticking, binding  \nInstallthe safety reversing sensor………………………………22,23  \nand balance………………………………………………………………………………3  \nFasten door bracket(sectional door) ………………………………24  \nIllustration of sectional door installation…………………………4  \nFasten door bracket(one-piece door)………………………………25  \nllustration of one-piece door installation……………………5  \nConnect door arm to trolley(sectional door)…………………26  \nCarton inventory……………………………………………………………………6  \nConnect door am to trolley (one-piece door)………………27  \nHardware inventory………………………………………………………………7  \nAdjustment section- pages 28-30  \nAssembly section - pages 8-11  \nTravel limit adjustments………………………………………………………………28  \nAssemble T-rai………………………………………………………………………………8  \nForce adjustments …………………………………………………………………29  \nAttach cable pulley bracke…………………………………………………8  \nTest the safety reversing sensor………………………………………30  \nInstall trolley………………………………………………………………9  \nTest the safety reverse system……………………………………30  \nFasten T-rail to opener……………………………………………………9  \nOperation safety instruction……………………………………………………31  \nInstall chain/cable………………………………………………………………………10  \nCare of your opener………………………………………………………………31  \nAttach sprocket cover………………………………………………………10  \nMaintenance schedule………………………………………………………………………31  \nTighten the chain and cable ………………………………………1  \nOperation of your opener………………………………………………………32  \nInstallation section -pages 11-27  \nReceiver and remote control programming………………………3  \nInstallation safety instruction……………………………………1  \nHaving a problem?……………………………………………………………34,35  \nDetermine header bracket location  \nRepair parts, rail assembly……………………………………………………36  \nSectional door………………………………………………………12  \nRepair parts, installation……………………………………………………………36  \nOne-piece door………………………………………………………………13  \nRepair parts, opener assembly………………………………………………37  \nInstall the header bracket………………………………………………14  \nAccessories……………………………………………………………………………………………………38  \nAttach the T-rail to header bracket…………………………………15  \nIndex………………………………………………………………………………………………………………39  \nPosition the opener…………………………………………………………16  \nHow to order repair parts………………………………………………………………40  \nHang the opener………………………………………………………………17  \nMaintenance agreemen………………………………………………………………40  \nInstall the door control…………………………………………………………………18  \nWarrant…………………………………………………………………………………40  \nStart by reviewing these important safety alert symbols  \nWhen you see these Safety Symbols on the followlng pages, they wlll alert you to the possbllity of  \nserlous injury or death if you do not comply with the corresponding instructions. The hazard may  \ncome from something mechanical or from electric shock. Read the instructions carefully.  \nWARNING  \nMechanical  \nElectrical  \nWhen you see this Safety Symbol on the following pages, it will alert you to the possibllity of damage  \nto your garage door and/or the garage door opener if you do not comply with the corresponding  \ninstructions. Read the instructions carefully.  \nThis garage door opener is designed and tested to offer safe ","cbCaig3zG0DTIQrx","https://ap.wps.com/l/cbCaig3zG0DTIQrx","pdf",2066061,"English","# Safety information and symbols\n## Mechanical and electrical warnings\n# Assembly and installation\n## Tools needed\n## Assembly section\n## Installation safety instructions\n## Installation of sectional and one-piece doors\n# Adjustment and testing\n## Travel limit adjustments\n## Force adjustments\n## Test the safety reversing sensor\n# Operation and maintenance\n## Operation safety instruction\n## Care and maintenance schedule\n# Troubleshooting and parts\n## Having a problem?\n## Repair parts and accessories\n# Warranty","[{\"question\":\"What safety warnings must be followed before using the opener for the first time?\",\"answer\":\"Read and follow all safety rules and operating instructions before first use. The manual warns about serious injury or death risks from mechanical hazards and electric shock, and about damage risks if instructions are not followed.\"},{\"question\":\"What should be done if the garage door binds, sticks, or is out of balance?\",\"answer\":\"Call for professional garage door service if the door binds, sticks, or is out of balance. The manual warns that unbalanced doors may not reverse and can cause serious injury or death.\"},{\"question\":\"How can you verify the door is balanced before beginning installation?\",\"answer\":\"Lift the door about halfway and release it; it should stay in place supported by its springs. Then raise and lower the door to check for binding or sticking.\"}]","Owner's Manual - CRAFTSMAN GARAGE DOOR OPENER | PDF",1792765843,101]