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SAFETYRULES
N[_'[,_ R|VERSE
HANDPOSITIONS
t.{fT
HAND JGHI
ANO
C0RREC!PO$1T_ON
JEJE_AF_ eA_
W11_DG?HJC_G$
_ITN U[FT 1HUI
CORrECt GI_I_ INCORR[¢f GRIp
Figure4
REDUCETHECHANCEOFKICKBACK
. Recognizethatkfcldoankcanhappen.Witha basle
understandingof_ckbeck,youconreducetheelement
ofsurpasswhichcontributestoaccidents.
, NeverIst themovthgchelacantact anyobjectatthe
tipoftheguidobar, Figure2.
* Keepthe workingareafreefrom obstructionssuch
as othertrees,branches,rocks,fences,stumps,etc.
Figure3. Elimlnataoravoidan7obstmat]onthatyour
chaincouldhitwhileyouarecuttingthrougheparticular
logorbreach.
• Keepyour chelasharpand properlytanelaaed. A
looseordu[Icha{ncanincreasethechanceofkickbec)_
tooccur. Followmanufacturerschainsharpeningand
maintenanceinstnJcltoco.Checktensionat regularIn-
tervalswiththeenginestopped,neverwiththeengine
running.Makesurethe barclampnutsare securely
lightenedaftertensioningthechain.
• Begin and continuecuttingat tugthrottle. Ifthe
chainis movingat a slowerspeed,thereis greater
chancefor kicld_cktooccur.
• Cutonelog at etime.
. Useex_'emecautlon whenre-enterthga prevthua
cut,
• Do notattemptplungecuts,
, Watchfor ehiRlnglogsorotherforcoethatcouldclose
acutandpinchorfallintochain.
, Use the Reduced-KickbackGuideBar and Low-
KickbackChainspeciltedforyoursaw.
MAINTAINCONTROL
• Keepa go_, firm gripon thecow withbcthheads
whenthe engineIsrunninganddon'tletgo, Rgure
4,Afirmgdpconneutndizekickbeckandhelpyoumain-
tamcontrolofthesew.Keeptheltngereofyourlefthand
encimiingandyourreftthurebunderthefmuthaed]ebar.
Keepyourdghtheedcompletelyereundtherearhandle
whetheryouaredghtheededorleftheeded.Kanpyour
leftarmstraightwiththee]bawlooked.
• Position yourlefthandDothefronthandlebersoIt
Isin astraightlinewithyourrighthandonthe rear
handlewhenmakingbuckingcuts, Figure4. Never
mvemerightandlefthandpesiltonsforanytypeofcut.
tins.
• Stand with your weightevenlybalancedon both
feet.
• StandaffghtlytotheIsft sideoftheeawtokeepyour
bodyfrom being In a directllnewith the cutting
chain. Figure4.
• Donotoverreach, Youcouldbedrawnorthrownoff
balanceandrosecontrolofthesaw.
• Do not cut above shoulderheighL It is difficultto
maintaincontrolofsawaboveshoulderheight.
UNDERSTANDINGREACTIVEFORCES
Pinch-KickbackendPug-InoccurwhenthechainIS
suddenlystoppedbybathspinched,caught,or by
contactingaforeignob_eofInthewood.Thisstoppfng
ofthechainresultsinareversalofthechainforceusedto
cutwoodandcausesthesawtomoveintheoppositedirec_
tianofthechainrotagon.Eitherreactionconresuffintoss
ofcontrolandpassiblecodousinjury,
• Pinch-Kiskback
- occurswhenchainontopofguide_r issuddeely
stopped.
- rapMiyddvessaws_/ghtbacktowardoperetor.
• Pug-In
- ocoumwhanthecheinontheboftomofthegu]debar
issuddenlystopped.
- pullsthesawrapidlyforward.
KICKBACKSAFETYFEATURES
A WARNING 1
THE FOLLOWING FEATURESARE IN-J
CLUDEOONYOURSAWTOHELPREDUCEI
THE HAZARDOF KICKBACK;HOWEVER,I
SUCH FEATURES WILL NOT TOTALLYI
ELIMINATETHISDANGEROUSREACTION
AS A CHAINSAW USER, DO
ONLYON SAFETYDEVICES. YOU
FOLLOW ALL EAFET'f
THIS
IN SERIOUS INJURY.
Reduced-Klokbecl(Gulde9er, designedw_ a smkilradths
lipwhichreducesthe size ofthekickbackdangerzoneonthe
guidebartip. F)gure5. AReduced-KickbackGuideBarkione
whichhasbeendemonctratedtosigni;icanll]yreducethenum-
der andseriousnessofkickbackswhentestedinaccord_ce
withANSIB175.t.*-1991
• Low--k%kback Chain, designedw_ a contoureddepth
gaugeand ard[inkwhkih deflectkickbackforceandaithw
woedtogra_Uuali_/rideintothecuner.Figure5. Low-I_ckback
Chainischainwninhhasmetkickbackperformancerequire-
mantact ANSI B175.1.1991whentestedonarepresentaiJve
sampleofchainsawsbelow3.8cubicInchdisplacementspe-
cifiedinANSI B175.1.1991.
• Handguard deslgnedtoredecethechanceofyourlofthand
contactingthechainffyourhandslipsoffthe ltoct henolebar.
• Position of front and rearhandlebars, desilgEnedw_hdis-
tahoebetweenhandlesand "in-line"witheachother. The
sprereadand"In-line"positionofthehandsprovidedbythis de-
signworktogethertogivebabnceandre_kitanceincontrol-
llngthe I_votofthe sawbacktowardtheoperatorifkickback
occurs.
• AN_Br7a.t.1991- Safetyrequlrerr_n_forgasdthepowerecld'_n
saws=Beet theAn'_dcanNaflceaJa_instliute inc.,Start*
dardB17a.1_99 ,
5"F_netrEalGuide Bat Radle=_
J oe_8=w,e_
/_/JIo,vs_
k_oCut_,
Malwlal
FigureS
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