Assessments - 4, GPA: 3.8
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Facilidade de uso
This sudden stopping pulls the saw forward and away from the operator and could easily cause the operator to lose control of the saw. Avoid Pinch- --Kickback: S Be extremely aware of situations or obstructions that can cause material to pinch the top of or otherwise stop the chain. S Do not cut more than one log at a time. S Do not twist the saw as the bar is withdrawn from an undercut when bucking. Avoid Pull- --In: S Always begin cutting with the engine at full speed and the saw housing against wood. S Use wedges made of plastic or wood. Never use metal to hold the cut open. Kickback Path AvoidObstructions Clear The Working Area REDUCE THE CHANCE OF KICKBACK S Recognize that kickback can happen. With a basic understanding of kickback, you can reduce the element of surprise which contributes to accidents. S Never let the moving chain contact any object at the tip of the guide bar. S Keep the working area free from obstructions such as other trees, branches, rocks, fences, stumps, etc. Eliminate or avoid any obstruction that your saw chain could hit while you are cutting through a particular log or branch. S Keep your saw chain sharp and properly tensioned. A loose or dull chain can increase the chance of kickback occurring. Follow manufacturer’s chain sharpening and maintenance instructions. Check tension at regular intervals with the engine stopped, never with the engine running. Make sure the chain brake nuts are securely tightened after tensioning the chain. S Begin and continue cutting at full speed. If the chain is moving at a slower speed, there is greater chance of kickback occurring. S Cut one log at a time. S Use extreme caution when re-entering a previous cut. S Do not attempt cuts starting with the tip of the bar (plunge cuts). S Watch for shifting logs or other forces that could close a cut and pinch or fall into chain. S Use the Reduced- --Kickback Guide Bar and Low- --Kickback Chain specified for your saw. MAINTAIN CONTROL Stand to the left of the saw Never reverse hand positions 4 5ThumbonundersideofhandlebarElbowlockedSKeepagood,firmgriponthesawwithbothhandswhentheengineisrunninganddon’tletgo.Afirmgripwillhelpyoureducekickbackandmaintaincontrolofthesaw. Keepthefingersofyourlefthandencir- clingandyourleftthumbunderthefronthandlebar.Keepyourrighthandcom- pletelyaroundtherearhandlewhetheryourarerighthandedorlefthanded.Keepyourleftarmstraightwiththeelbowlocked. SPositionyourlefthandonthefronthandle- barsoitisinastraightlinewithyourrighthandontherearhandlewhenmakingbuckingcuts.Neverreverserightandlefthandpositionsforanytypeofcutting. SStandwithyourweightevenlybalancedonbothfeet. SStandslightlytotheleftsideofthesawtokeepyourbodyfrombeinginadirectlinewiththecuttingchain. SDonotoverreach.Youcouldbedrawnorthrownoffbalanceandlosecontrolofthesaw. SDonotcutaboveshoulderheight.Itisdiffi- culttomaintaincontrolofsawaboveshoulderheight. KICKBACKSAFETYFEATURESWARNING:Thefollowingfeaturesareincludedonyoursawtohelpreducethehazardofkickback;however,suchfeatureswillnottotallyeliminatethisdangerousreac- tion.Asachainsawuser,donotrelyonlyonsafetydevices.Youmustfollowallsafetyprecautions,instructions,andmaintenanceinthismanualtohelpavoidkickbackandotherforceswhichcanresultinseriousinjury. SReduced--KickbackGuideBar,designedwithasmallradiustipwhichreducesthesizeofthekickbackdangerzoneonthebartip.AReduced--KickbackGuideBarhasbeendemonstratedtosignificantlyre- ducethenumberandseriousnessofkick- backswhentestedinaccordancewithsafetyrequirementsforgasolinepoweredchainsawsassetbyANSIB175.1. SmallRadiusTipReducedKickbackSymmetricalGuideBarSymmetricalGuideBarLargeRadiusTipSLow--KickbackChain,designedwithacontoureddepthgaugeandguardlinkwhichdeflectkickbackforceandallowwoodtograduallyrideintothecutter. Low--KickbackChainhasmetkickbackperformancerequirementswhentestedonarepresentativesampleofchainsawsbelow3.8cubicinchdisplacementspeci- fiedinANSIB175.1. Low---KickbackChainNotaLow---KickbackChainCanObstructMaterialContouredDepthGaugeElongatedGuardLinkDeflectskickbackforceandallowswoodtograduallyrideintocutterSFrontHandGuard,designedtoreducethechanceofyourlefthandcontactingthechainifyourhandslipsoffthefronthandlebar. SPositionoffrontandrearhandlebars,de- signedwithdistancebetweenhandlesand“in-line”witheachother.Thespreadand“in-line”positionofthehandsprovidedbythisdesignworktogethertogivebalanceandresistanceincontrollingthepivotofthesawbacktowardtheoperatorifkick- backoccurs. CHAINBRAKEANDCKAANGLESChainBrake,designedtostopthechainintheeventofkickback. WARNING:WEDONOTREP- RESENTANDYOUSHOULDNOTAS- SUMETHATTHECHAINBRAKEWILLPROTECTYOUINTHEEVENTOFAKICKBACK.Kickbackisalightningfastac- tionwhichthrowsthebarandrotatingchainbackanduptowardtheoperator.Kickbackcanbecausedbyallowingcontactofthebartipinthedangerzonewithanyhardobject. Kickbackcanalsobecausedbypinchingthesawchainalongthetopoftheguidebar.Thisactionmaypushtheguidebarrapidlybacktowardtheoperator.Eitheroftheseeventsmaycauseyoutolosecontrolofthesawwhichcouldresultinseriousinjuryor...