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It includes a key to symbols, warnings about dangerous operation, and requirements for protective equipment such as helmet, hearing protection, eye/visor protection, gloves, trousers, and boots. The manual also outlines risks from incorrect fuel/mixture settings, poor air-filter maintenance, chain lubrication, and unsafe modifications, with health cautions related to exhaust and catalytic mufflers.",{"@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/operators-manual-chain-saw-51-55-safety-instructions/646738/",{"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/operators-manual-chain-saw-51-55-safety-instructions/646738.png","ImageObject",300,407,{"name":92,"@type":93},"cksankcs","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-11-12","2026-10-23",true,{"@type":102,"interactionType":103,"userInteractionCount":34},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What personal protective equipment must be worn when operating the chain saw?","Question",{"text":112,"@type":113},"Wear an approved protective helmet, approved hearing protection, protective glasses or visor, gloves with saw protection, protective trousers with saw protection, and boots with saw protection (steel toe-cap and non-slip sole).","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"Why is correct fuel mixture and carburettor adjustment important?",{"text":117,"@type":113},"If the carburettor mixture is too lean, it greatly increases the risk of engine failure. 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Chain saws can be dangerous! Careless or incorrect use can result in serious or fatal injury to the operator or others.  \nPlease read the instructions carefully and make sure you understand them before using the saw.  \nAlways wear:  \n• Approved protective helmet  \n• Approved hearing protection  \n• Protective glasses or visor  \nThis product is in accordance with applicable EC directives.  \nNoise emission to the environment according to the European Community’s Directive.  \nThe machine’s emission is specified in chapter Technical data and on label.  \nOther symbols/decals on the machine refer to special certification requirements for certain markets.  \nSymbols in the operator’s manual:  \n2 – English  \nCONTENTS  \nBefore using a new saw  \n• Read the instructions carefully.  \n• Check cutting equipment is correctly fitted and adjusted. See page 25.  \n• Refuel and start the saw. Check the carburettor settings. See pages 26-29.  \n• Do not use the saw until sufficient chain oil has reached the chain, see page 14.  \nIMPORTANT! If the carburettor mixture is too lean it greatly increases the risk of engine failure.  \nPoor maintenance of the air filter will cause carbon build-up on the spark plug and lead to difficult starting.  \nIf the chain is badly adjusted it will cause increased wear or damage to the bar, drive sprocket and chain.  \n!  \nUnder no circumstances should you modify the original design of the chain saw without approval from the manufacturer. Always use genuine spare parts. Unauthorized modifications or accessories may lead to serious injury or death.  \n!  \nA chain saw is a dangerous tool if used carelessly or incorrectly and can cause serious, even fatal injuries. It is very important that you read and understand these instructions.  \n!  \nWARNING! The insides of mufflers fitted with catalytic converters contain chemicals that may be carcinogenic. Avoid contact with these elements in the event of a defective muffler.  \n!  \nLong term inhalation of the engine's exhaust fumes, chain oil mist and dust from sawdust can represent a health risk.  \nHusqvarna AB has a policy of continuous product development and therefore reserves the right to modify the design and appearance of products without prior notice.  \nContents  \nKey to symbols .......................................... 2  \nSafety instructions  \nPersonal protective equipment ......................... 4  \nChain saw safety equipment ............................ 4  \nInspecting, maintaining and servicing chain saw safety equipment ............................................................................ 8  \nCutting equipment .......................................... 10  \nHow to avoid kickback .................................... 16  \nGeneral safety precautions ............................ 18  \nGeneral working instructions .......................... 19  \nWhat is what?  \nWhat is what? .................................................................... 24  \nAssembly  \nMounting guide bar and chain ........................................... 25  \nFuel handling  \nFuelmix .............................................................................. 26  \nFuelling .............................................................................. 27  \nStart and stop  \nStart and stop .................................................................... 28  \nMaintenance  \nCarburettor ........................................................................ 29  \nStarter device .................................................................... 30  \nAir filter .............................................................................. 31  \nSpark plug ......................................................................... 31  \nMuffler ...............................................................","cbCaiu6OOCijfcO9","https://ap.wps.com/l/cbCaiu6OOCijfcO9","pdf",1645030,36,"English","# Safety instructions\n## Personal protective equipment\n## Chain saw safety equipment","[{\"question\":\"What personal protective equipment must be worn when operating the chain saw?\",\"answer\":\"Wear an approved protective helmet, approved hearing protection, protective glasses or visor, gloves with saw protection, protective trousers with saw protection, and boots with saw protection (steel toe-cap and non-slip sole).\"},{\"question\":\"Why is correct fuel mixture and carburettor adjustment important?\",\"answer\":\"If the carburettor mixture is too lean, it greatly increases the risk of engine failure. The manual also advises checking carburettor settings during start-up.\"},{\"question\":\"What are the health and safety risks mentioned in the warnings?\",\"answer\":\"Long term inhalation of engine exhaust fumes, chain oil mist, and sawdust dust can represent a health risk. The inside of mufflers with catalytic converters contains chemicals that may be carcinogenic.\"}]","Operator´s manual - Chain saw 51 & 55 - Safety instructions | PDF",1792768181,91]