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The document emphasizes using a qualified, certified bicycle mechanic for all service work to reduce risks of serious injury or death. It specifies warranty terms, including coverage limits, exclusions for wear-and-tear and modifications, and how to proceed with warranty claims. It also provides safety information such as pre-ride brake checks, helmet use, and cautions during caliper adjustments and disc service.",{"@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/dominion-a4-service-bleed-guide-warranty-and-safety-information/640386/",{"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/dominion-a4-service-bleed-guide-warranty-and-safety-information/640386.png","ImageObject",300,407,{"name":92,"@type":93},"Angel","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-11-12","2026-10-22",true,{"@type":102,"interactionType":103,"userInteractionCount":44},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"Who should perform service and installation for the Hayes Dominion A4 disc brake?","Question",{"text":112,"@type":113},"Service and installation should be performed by a qualified mechanic or a certified bicycle mechanic using proper tools.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"What does the warranty cover and what is excluded?",{"text":117,"@type":113},"The warranty covers defects in materials or workmanship under normal intended use for the stated period. It excludes damage from crashes or falls, alterations or modifications, improper maintenance, improper use, and normal wear and tear, including specified wear-and-tear parts.",{"name":119,"@type":110,"acceptedAnswer":120},"What safety checks and precautions are required before riding and during service?",{"text":121,"@type":113},"Before each ride, check brakes for proper function and brake pad wear, and wear a helmet. Keep hands and fingers away from the disc, allow components to cool before service, and do not adjust the caliper while the wheel is spinning or while it is hot.","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},640386,1793150109,{"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":44,"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,"preview_page_count":4},687207412472,"https://ap-avatar.wpscdn.com/davatar_155a257f0dc6eb9ab79c44ca47cae57d","DOMINION A4 | SERVICE & BLEED GUIDE  \nHAYES DISC BRAKE  \n5800 W Donges Bay Rd Mequon, WI 53092  \n[hayesdiscbrake.com](hayesdiscbrake.com)  \n888.686.3472  \nSupport: [hayesdiscbrake.com/support](hayesdiscbrake.com/support)  \nHAYES PERFORMANCE SYSTEMS WARRANTY  \nLimited Warranty:  \nHAYES warrants its products to be free from defects in materials or workmanship under normal intended use for a period of one year (two years in European Union countries) from the date of purchase, subject to normal wear and tear. Unless otherwise prohibited by law, any such defective products will be repaired or replaced at the option of HAYES when received with proof of purchase, freight prepaid. This warranty does not cover breakage, bending, or damage that may result from crashes or falls. This warranty does not cover any defects or damage caused by alterations or modifications of HAYES products or by normal wear, accidents, improper maintenance, damages caused by the use of HAYES products with parts of different manufacturers, improper use or abuse of the product, application or uses other than those set forth in the HAYES instruction manual or failure to follow the instructions contained in the applicable HAYES instruction manual. Instruction manuals can be found on-line at www. hayescomponents.com. Any modifications made by the BUYER or any subsequent user will render the warranty null and void. This warranty does not apply when the serial number or production code has been deliberately altered, defaced or removed from the product. The cost of normal maintenance or replacement of service items, which are not defective, shall be the BUYER’s responsibility. If permitted by local law, this warranty is expressly in lieu of all other warranties (except as to title), express or implied, and in particular and without limitation HAYES disclaims the implied warranties of merchantability or fitness for purpose If for any reason warranty work is necessary, return the component to the place of purchase or contact your dealer or local HAYES distributor. In the USA, contact HAYES for a return authorization number (RA\\#) at (888) 686-3472. At that time, instructions for repair, return, or replacement shall be given. Customers in countries other than the USA should contact their dealer or local HAYES distributor.  \nLimitation of Liability .  \nUnless required by mandatory law, HAYES shall not be liable for any incidental, indirect, special or consequential damages.  \nThis warranty does not apply to normal wear and tear. Wear and tear parts are subject to damage through normal use, failure to service according to recommendations or riding in conditions other than recommended. The cost of normal maintenance or replacement of service items, which are not defective, shall be paid for by the original purchaser. Wear and tear parts that will not be replaced under warranty include but are not limited to the following:  \n\n| Bushings | Dust Seals | Stripped or Worn Bolts |\n| --- | --- | --- |\n| Rear Shock | Air Seals and/or O-rings | Remote Lockout Cable |\n| Mount Hardware | Bearings | Gloves |\n| Handlebar grips | Upper Stanchion Tubes | Lower Stanchion Tubes(Dorado) |\n| Tubeless Valves | Tubeless Tape | Pads |\n| Rotors |  |  |\n\nDOMINION A4 SERVICE & BLEED GUIDE  \n3  \nINTRODUCTION  \nThis manual is intended to provide the information necessary for installation, set-up, normal maintenance and service of the Hayes Dominion A4 disc brake system. We highly recommend installation be performed by a qualified mechanic. These instructions can be downloaded from the Hayes Disc Brake website at [www.hayesdiscbrake.com](www.hayesdiscbrake.com)  \n! WARNING !   \nWe highly recommend that service to this brake be performed by a certified bicycle mechanic. Failure to follow instructions presented in this manual could lead to serious injury or death. Any questions about the servicing of this brake orthe manual itself should be directed to Hayes Customer Support at:  \n\n| Hayes Bicycle USA ","cbCaiswvYBtBVfKO","https://ap.wps.com/l/cbCaiswvYBtBVfKO","pdf",4355684,25,"English","# INTRODUCTION\n## SAFETY INFORMATION","[{\"question\":\"Who should perform service and installation for the Hayes Dominion A4 disc brake?\",\"answer\":\"Service and installation should be performed by a qualified mechanic or a certified bicycle mechanic using proper tools.\"},{\"question\":\"What does the warranty cover and what is excluded?\",\"answer\":\"The warranty covers defects in materials or workmanship under normal intended use for the stated period. It excludes damage from crashes or falls, alterations or modifications, improper maintenance, improper use, and normal wear and tear, including specified wear-and-tear parts.\"},{\"question\":\"What safety checks and precautions are required before riding and during service?\",\"answer\":\"Before each ride, check brakes for proper function and brake pad wear, and wear a helmet. Keep hands and fingers away from the disc, allow components to cool before service, and do not adjust the caliper while the wheel is spinning or while it is hot.\"}]","DOMINION A4 SERVICE & BLEED GUIDE - Warranty and Safety Information | PDF",1792708910,63]