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closely and highlights risks such as loss of control, severe injury or death, and property or machine damage, plus guidance on practices, training, and safety symbols and decals.","https://schema.org",{"og:url":32,"og:type":73,"og:title":10,"og:site_name":45,"og:description":12},"article",{"robots":75,"canonical":32},"index,follow",{"doc_id":77,"site_id":7},676096,1793774844,{"code":4,"msg":80,"data":81},"success",[82,86,90,94,99,103,108,113,118,121,125],{"id":22,"doc_module":4,"doc_module_name":25,"category_name":83,"show_sort_weight":84,"slug":85},"Story & 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000101 +)  \n991156 – ZT HD 60 (SN 000101 +)  \n991160 – ZT HD 44 (SN 000101 +)  \n991162 – ZT HD 48 (SN 000101 +)  \n991164 – ZT HD 52 (SN 000101 +)  \n991166 – ZT HD 60 (SN 000101 +)  \n991180 – ZT HD 44 CARB (SN 000101 +)  \n991182 – ZT HD 48 CARB (SN 000101 +)  \n991184 – ZT HD 52 CARB (SN 000101 +)  \n991186 – ZT HD 60 CARB (SN 000101 +)  \nENGLISH  \nFRANÇAIS  \n05075300C • 6/17 Printed in USA  \nTABLE OF CONTENTS  \nWELCOME ...................... 1  \nSAFETY ......................... 2  \nPractices & Laws .................. 2  \nEmission Control System ............ 2  \nRequired Operator Training .......... 2  \nSafety Alert Symbol ................ 2  \nSignal Words ..................... 2  \nSafety Decals ..................... 3  \nSafety Rules ...................... 6  \nASSEMBLY ...................... 11  \nCONTROLS AND FEATURES ....... 13  \nIgnition Key ...................... 14  \nThrottle Control Lever .............. 14  \nPower-Take-Off (PTO) Knob ......... 14  \nHour Meter ....................... 14  \nHeight-of-Cut Adjustment System ..... 14  \nTransport Lock Release Lever ........ 15  \nDeck Lift Pedal .................... 15  \nSeat Adjustment Lever.............. 15  \nParking Brake Lever ............... 15  \nSafety Interlock System ............. 15  \nSteering Levers ................... 15  \nTransaxle Bypass Levers ............ 15  \nAnti-scalp Rollers .................. 16  \nOPERATION ..................... 16  \nEmergency Stopping ............... 16  \nBefore Operating Unit .............. 16  \nStart the Engine ................... 16  \nOperate Unit...................... 17  \nStop the Engine ................... 17  \nMove Unit Manually ................ 18  \nTransport Unit .................... 18  \nRelease transport lock .............. 18  \nMAINTENANCE .................. 18  \nService Position ................... 18  \nMaintenance Schedule ............. 19  \nService Parts ..................... 19  \nHour / Maintenance Meter ........... 20  \nCheck Safety Interlock System ....... 20  \nCheck Parking Brake ............... 20  \nCheck Engine Oil .................. 20  \nCheck Tire Pressure ............... 20  \nCheck Carbon Canister Filter......... 21  \nCheck Fasteners .................. 21  \nLubricate Unit ..................... 21  \nCheck Mower Blades ............... 21  \nBattery Service .................... 23  \nCheck Mower Belts ................ 24  \nCheck Hydraulic System ............ 24  \nSERVICE & ADJUSTMENTS ........ 26  \nAdjust Seat ...................... 26  \nAdjust Steering Levers .............. 26  \nAdjust Unit to Drive Straight.......... 27  \nAdjust Transaxles ................. 27  \nElectrical Service .................. 28  \nReplace Transaxle Drive Belt ........ 31  \nAdjust Anti-Scalp Rollers ............ 33  \nAdjust Parking Brake Lever .......... 33  \nRemove and Install Mower Deck ...... 33  \nLevel and Pitch Mower Deck ......... 35  \nTROUBLESHOOTING ............. 37  \nSTORAGE ....................... 39  \nShort-Term Storage ................ 39  \nLong-Term Storage ................ 39  \nStart-of-Season Preparation ......... 39  \nACCESSORIES................... 39  \nSPECIFICATIONS................. 40  \nSPECIFICATIONS................. 41  \nSPECIFICATIONS................. 42  \nWARRANTY ..................... 43  \nWELCOME  \nCongratulations on your purchase and welcome to the Gravely family! Every machine in the Gravely lineup is designed for long-lasting and unsurpassed performance. We are confident your machine will be part of your family for many years to come.  \nHave Questions or Need Assistance? [gravelymower.com](gravelymower.com) • [gravely.custhelp.com](gravely.custhelp.com)  \nA parts manual for your unit is available for free download or [purchase at gravely.com](purchase at gravely.com).  \nManual del operador español está disponible para su descarga gratuita ocompra en [gravely.com](gravely.com).  \nPRODUCT REGISTRATION  \nYou or ","cbCaiqLbt8XommWG","https://ap.wps.com/l/cbCaiqLbt8XommWG","pdf",9482759,48,"English","# TABLE OF CONTENTS\n## WELCOME\n## SAFETY\n## ASSEMBLY\n## CONTROLS AND FEATURES\n## OPERATION\n## MAINTENANCE\n## SERVICE & ADJUSTMENTS\n## TROUBLESHOOTING\n## STORAGE\n## ACCESSORIES\n## SPECIFICATIONS\n## WARRANTY","[{\"question\":\"Which ZT HD™ models are covered by this operator’s manual?\",\"answer\":\"The manual covers ZT HD 48/52/60 and ZT HD 44/48/52/60 variants, including CARB versions, listed under model numbers 991152 through 991186.\"},{\"question\":\"What must you do before operating or servicing the unit?\",\"answer\":\"Read and fully understand all manuals provided with the unit, including the separate engine manual for engine service recommendations and safety instructions.\"},{\"question\":\"What does the safety section emphasize?\",\"answer\":\"It instructs operators to follow safety rules closely and highlights risks such as loss of control, severe injury or death, and property or machine damage, plus guidance on practices, training, and safety symbols and decals.\"}]","ZT HD™ Operator’s Manual - Manuel de I’utilisateur - Models 991152 to 991186 | PDF",121]