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Includes initial checks and diagnostic tools, reset of fault codes, and battery testing routines covering requirements, LED status, cable inspection, abrupt starting sequence, and charger output/controls. Covers charging system components and operating frequency/voltage issues such as Hz over/under and speed adjustment for single and twin cylinder engines, plus alternator and starter motor removal. Provides guidance for diagnosing common engine faults including under-power, high temperature, low oil, oil leak identification, and low-oil shutdown switch testing, along with fuel system checks for solenoid valve LPG/NG and related no-start conditions.",{"@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":30,"@type":76,"position":81},"https://docshare.wps.com/document/technology/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/diagnostic-repair-manual-home-standby-generators-safety-definitions-diagnostic-faults-and-corrective-action/646433/",{"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/diagnostic-repair-manual-home-standby-generators-safety-definitions-diagnostic-faults-and-corrective-action/646433.png","ImageObject",300,407,{"name":92,"@type":93},"Finn","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-28","2026-10-23",true,{"@type":102,"interactionType":103,"userInteractionCount":19},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What safety precautions must be understood before operating the generator?","Question",{"text":112,"@type":113},"The manual emphasizes reading and understanding the safety precautions before operation. Failure to follow them could result in serious injury.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How are diagnostic faults handled in this manual?",{"text":117,"@type":113},"The manual provides procedures for diagnostic faults and corrective action, including resetting fault codes and performing initial checks using HSB diagnostic tools.",{"name":119,"@type":110,"acceptedAnswer":120},"What battery and charging checks are covered?",{"text":121,"@type":113},"It covers battery requirements, low battery LED indications, visual inspection, checking battery cables, abrupt starting sequence checks, battery test and load test, and battery charger output voltage testing including model-specific charger removal and installation.","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},646433,1793030475,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":29,"category_name":30,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":19,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":139,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":144,"read_time":145},34359740700684,"https://ap-avatar.wpscdn.com/avatar/1f400023980c374ae676?_k=1777273430885731487","DIAGNOSTIC REPAIR MANUAL  \nHOME STANDBY GENERATORS  \nSAVE THESE INSTRUCTIONS. This manual contains important safety precautions which should be read and understood before operating the product. Failure to do so could result in serious injury. This manual should remain with the product.  \nSpecifications, descriptions and illustrations in this manual are as accurate as known at the time of publication, but are subject to change without notice.  \nREV 20221223 Champion Power Equipment, Inc. , Santa Fe Springs, CA USA  \nTABLE Of CONTENTS  \nSafety Definitions .......................................... 4  \nfor Electrician/Technician............................. 4  \nIntroduction ................................................... 4  \nContacts ........................................................ 4  \nThe Champion Staff .............................................. 4  \nCustomer Care Team ............................................. 4  \nInitial Checks ................................................. 5  \nHSB Diagnostic Tools ..................................... 5  \nDiagnostic faults and Corrective Action ....... 6  \nReset Fault Codes ................................................ 6  \nBatteries ........................................................ 6  \nBattery Requirements ............................................ 6  \nLow Battery LED ................................................. 7  \nVisual Inspection of Batteries .................................... 7  \nCheck Battery Cables ........................................... 7  \nAbrupt Starting Sequence ....................................... 7  \nSolution ........................................................... 7  \nBattery Test....................................................... 7  \nBattery Load Test ................................................ 7  \nBattery Charger ............................................. 8  \nFeatures .......................................................... 8  \nTest Battery Charger Output Voltage ............................ 8  \nButton Marked E.O. on Battery Charger ......................... 8  \nBattery Charger-Models Manufactured Prior to September 2016 .............................................................. 9  \nRemoval and Installation of Battery Charger-All Models ...... 9  \nAfter Replacement of Battery Charger ......................... 10  \nHz Over / Under ........................................... 10  \nHz Over-Speed .................................................. 10  \nHz Over-Speed Diagnosis ....................................... 10  \nSingle Cylinder Speed Frequency Adjustment ................. 11  \nHz Over/Under Governor Correction – Single Cylinder Engine .......................................... 11  \nTwin Cylinder Frequency Adjustment........................... 11  \nHz Over/Under Governor Correction – Twin Cylinder Engine ............................................ 12  \nHz Under-Speed ................................................. 12  \nHz Under-Speed Diagnosis...................................... 12  \nEngine Under-Power ............................................ 13  \nNo Voltage at Terminal 1, Terminal 2 ........................... 13  \nRemoval and Installation of Alternator – All Models ....................................................... 14  \nEngine Overload ................................................. 14  \nSpeed ........................................................... 14  \nStarting System ................................................. 14  \nCheck Starter Motor Draw Test................................. 14  \nRemoval and Installation of Starter Motor Assembly-Twin Cylinder Engine .................................................. 15  \nRemoval and Installation of Starter Motor Assembly-Single Cylinder Engine .................................................. 16  \nAfter Removal and Installation of Starter Motor Assembly All Models ........................................................... 18  \nHigh Engine Te","cbCaidoGNsc8Wa0c","https://ap.wps.com/l/cbCaidoGNsc8Wa0c","pdf",30848427,43,"English","# Safety Definitions\n## for Electrician/Technician\n# Introduction\n# Contacts\n# Customer Care Team\n# Initial Checks\n# HSB Diagnostic Tools\n# Diagnostic faults and Corrective Action\n## Reset Fault Codes\n# Batteries\n## Battery Requirements\n## Low Battery LED\n## Visual Inspection of Batteries\n## Check Battery Cables\n## Abrupt Starting Sequence\n## Battery Test\n## Battery Load Test\n## Battery Charger\n## Test Battery Charger Output Voltage\n## Button Marked E.O. on Battery Charger\n## Battery Charger-Models Manufactured Prior to September 2016\n## Removal and Installation of Battery Charger-All Models\n# Hz Over / Under\n## Hz Over-Speed\n## Hz Over-Speed Diagnosis\n## Single Cylinder Speed Frequency Adjustment\n## Hz Over/Under Governor Correction – Single Cylinder Engine\n## Twin Cylinder Frequency Adjustment\n## Hz Over/Under Governor Correction – Twin Cylinder Engine\n## Hz Under-Speed\n## Hz Under-Speed Diagnosis\n# Engine Under-Power\n## No Voltage at Terminal 1, Terminal 2\n## Removal and Installation of Alternator – All Models\n# Engine Overload\n## Speed\n## Starting System\n## Check Starter Motor Draw Test\n## Removal and Installation of Starter Motor Assembly-Twin Cylinder Engine\n## Removal and Installation of Starter Motor Assembly-Single Cylinder Engine\n## After Removal and Installation of Starter Motor Assembly All Models\n# High Engine Temperature\n# Low Oil\n## Oil Leak Identification – All Models\n## Low Oil Shut Down Switch – Twin Cylinder Engines\n## Test: Low Oil Shutdown Switch\n## Removal and Replacement of Low Oil Shutdown Switch\n## After Removal and Installation of Low Oil Shutdown Switch\n## Preventative Maintenance of Low Oil Shutdown Switch – Twin Cylinder Engines\n# Over Crank\n## Over Crank Fault Code\n## Troubleshooting: Over Crank\n# Fuel System\n## Solenoid Valve, LPG / NG\n## Check Voltage: Wiring Circuit-Solenoid Valve, LPG / NG\n## Troubleshooting: 12 VDC at Solenoid Valve, LPG / NG-Engine Will Not Start\n## 12 VDC at Fuel Shut Off Solenoid-Engine Will Not Start\n# HSB Starts, Operates Then Shuts Down\n# Enclosure: All Models-HSB Generator\n## Disassembly – Side Covers\n## Reassembly of Left, Right Side Covers\n# Firewalls","[{\"question\":\"What safety precautions must be understood before operating the generator?\",\"answer\":\"The manual emphasizes reading and understanding the safety precautions before operation. Failure to follow them could result in serious injury.\"},{\"question\":\"How are diagnostic faults handled in this manual?\",\"answer\":\"The manual provides procedures for diagnostic faults and corrective action, including resetting fault codes and performing initial checks using HSB diagnostic tools.\"},{\"question\":\"What battery and charging checks are covered?\",\"answer\":\"It covers battery requirements, low battery LED indications, visual inspection, checking battery cables, abrupt starting sequence checks, battery test and load test, and battery charger output voltage testing including model-specific charger removal and installation.\"}]","DIAGNOSTIC REPAIR MANUAL - HOME STANDBY GENERATORS - Safety Definitions - Diagnostic Faults and Corrective Action | PDF",1792761376,108]