11 – English
GLOSSARY OF TERMS
Bucking
Theprocessofcrosscuttingafelledtreeorlog
intolengths.
Chain Saw Power Head
Achainsawwithoutthesawchainandguidebar.
Drive Sprocket or Sprocket
Thetoothedpartthatdrivesthesawchain.
Felling
Theprocessofcuttingdownatree.
Felling Back Cut
Thefinalcutinatreefellingoperationmadeon
theopposite sideof thetreefromthe notching
undercut.
Front Hand Guard
Astructuralbarrier betweenthe fronthandle of
achainsawandtheguidebar,typicallylocated
closetothehandpositiononthefronthandle.
Front Handle
Thesupporthandlelocatedatortowardthefront
ofthechainsaw.Thishandleisforthelefthand.
Guide Bar
Asolidrailedstructurethatsupportsandguides
thesawchain.
Kickback
Thebackwardorupwardmotion,orboth,ofthe
guidebaroccurringwhenthesawchainnearthe
noseofthetopareaoftheguidebarcontactsany
objectsuchasalogorbranch,orwhenthewood
closesinandpinchesthesawchaininthecut.
Kickback (Pinch)
Therapidpushbackofthesawwhichcanoccur
whenthewoodclosesinandpinchesthemoving
sawchaininthecutalongthetopoftheguidebar.
Kickback (Rotational)
Therapid upwardandbackward motion ofthe
sawwhichcanoccurwhenthemovingsawchain
neartheupperportionofthetipoftheguidebar
contactsanobject,suchasalogorbranch.
Lock-out Button
Amovable stop that preventsthe unintentional
operationoftheswitchuntilmanuallyactuated.
Low-Kickback Chain
Achainthatcomplieswiththekickbackperfor-
mancerequirementsofANSIB175.1whentested
onarepresentativesampleofchainsaws.
Normal Cutting Position
Thosepositionsassumedinperformingthebuck-
ingandfellingcuts.
Notching Undercut
Anotchcutinatreethatdirectsthetree’sfall.
Rear Handle
Thesupporthandlelocatedatortowardtherear
ofthesaw.Itnormallycontainsthethrottle.This
handleisfortherighthand.
Reduced Kickback Guide Bar
Aguide bar which has been demonstrated to
reducekickbacksignificantly.
Replacement Saw Chain
Achainthatcomplieswiththekickbackperfor-
mancerequirementsofANSIB175.1whentested
withspecificchainsaws.ItmaynotmeettheANSI
performancerequirementswhenusedwithother
saws.
Saw Chain
Aloopofchainhavingcuttingteeththatcutthe
wood,andthatisdrivenbythemotorandissup-
portedbytheguidebar.
Springpole
Asmalltree(sapling)orlimbthatisbentortrapped
undertension.Itmay“springback”rapidlywhen
cut,causingadangeroussituation.
Switch Trigger
Adevice that when operated will complete or
interruptanelectricalpowercircuittothemotor
ofthechainsaw.