Product Manual

15
OREGON® PowerNow™
CHAINSAW MODEL CS250
AF 0911 - F/N 547361
CHAINSAW NAMES AND TERMS
Automatic Oiler:Asystemthat
automaticallylubricatestheguidebar
andsawchain.
Bucking:Theprocessofcross-cuttinga
felledtreeorlogintolengths.
Bucking Spikes:Thepointedtoothor
teethforusewhenfellingorbucking
topivotthesawandmaintainposition
whilesawing.
Chain Brake:Adeviceusedtostopthe
sawchain.
Chainsaw Powerhead:Achainsaw
withoutthesawchainorguidebar.
Drive Sprocket:Thetoothedpartthat
drivesthesawchain.
Felling:Theprocessofcuttingdowna
tree.
Felling Back Cut:Thenalcutinatree
fellingoperationmadeontheopposite
sideofthetreefromthenotching
undercut.
Front Handle:Thesupporthandle
locatedatortowardthefrontofthe
chainsaw.
Hand Guard:Astructuralbarrier
betweenthefronthandleofachainsaw
andtheguidebar,typicallylocated
closesttothehandpositionofthefront
handleandsometimesemployedas
anactivatingmechanismforthechain
brake.
Guide Bar:Arailedstructurethat
supportsandguidesthesawchain.
Kickback:Thebackwardorupward
motion,orboth,oftheguidebar
occurringwhenthesawchainnearthe
noseofthetopareaoftheguidebar
contactsanyobjectsuchasalogor
branch,orwhenthewoodclosesinand
pinchesthesawchaininthecut.
Low-Kickback Chain:Achain
thatcomplieswiththekickback
performancerequirementsofANSI
B175.1whentestedonarepresentative
sampleofchainsaws.
Normal Cutting Position:Those
positionsassumedinperformingthe
buckingandfellingcuts.
Notching Undercut:Anotchcutinatree
thatdirectsthetree’sfall.
Rear Handle:Thesupporthandle
locatedatortowardtherearofthesaw.
Reduced Kickback Guide Bar:Aguide
barwhichhasbeendemonstratedto
reducekickbacksignicantly.
Replacement Saw Chain:Achain
thatcomplieswiththekickback
performancerequirementsofANSI
B175.1whentestedwithspecic
chainsaws.ItmaynotmeettheANSI
performancerequirementswhenused
withothersaws.
Saw Chain:Aloopofchainhaving
cuttingteeth,thatcutthewood,and
thatisdrivenbythepowerheadandis
supportedbytheguidebar.
Trigger Lock-Out:Amovablestopthat
preventstheunintentionaloperation
ofthetriggerswitchuntilmanually
actuated.
Trigger Switch:Adevicethatwhen
operatedwillcompleteorinterruptan
electricalpowercircuittothemotorof
thechainsaw.
CHAINSAW NAMES AND TERMS