i,i ii iii iii i HI I IIII Imlllr
SAFETY RULES
i,ll
iNevRvee1 sno
Hand Positions The Left
OfThe Saw
Elbow
•Locked
UnderSide Of
\Handlebar
Figure 4
REDUCE THE CHANCE OF KICKBACK
•Recognize that kickback can happen. With abasic
understandingofkickback, youcen reducetheelement
of surprisewhichcontributes toaccidents.
•Never let the moving chain contact any object at the
tip of the guide bar. Figure 2.
• Keep the working area free from obstructions such
as other trees, branches, rocks, fences, stumps, etc.
Figure 3. Eliminate or avoid any obstructionthat your
chaincouldhitwhileyouare cuttingthroughaparticular
logor branch.
•Keep your chain sharp and properly tensioned. A
loose or dullchaincan increase the chance ofkickback
to occur. Follow manufacturer'schain sharpening and
maintenance instructions. Check tensionat regufarin-
terva{s with the engine stopped,never with the engine
running. Make sure the bar clamp nuts are securely
tightened after tensioningthechain.
•Begin and continue cutting at full throttle. If the
chain is moving at a slower speed, there is greater
chance for kickback to occur.
MAINTAIN CONTROL
4Keep agood, firm grip on the saw with both hands
when the engine is running and don't let go. Figure
4.Afirmgrip canneutralizekickbackand helpyou main-
taincontrolofthe saw. Keep thefingersofyourleft hand
encirclingand yourleftthumb underthe fronthandlebar.
Keep your right handcompletelyaround therearhandle
whetheryou are righthanded orlefthanded. Keep your
leftarm straightwiththe elbow locked.
•Position your left hand on the front handlebar so it
is in a straight line with your right hand on the rear
handle when making bucking cuts. Figure4. Never
reverseright and lefthand positionsfor any typeofcut-
• _d with your weight evenly balanced on both
feet.
•Stand slighUyto theleft side of the sawto keepyour
body from being in a direct line with the cutting
chain. Figure 4.
•Do not overreach. You could be drawn orthrown off
balance and lose controlofthe saw.
•Do not cut above shoulder height, it is difficultto
maintaincontrolofsaw above shoulder heighL
UNDERSTANDING REACTIVE FORCES
Pinch-Kickback and Pull-In occur when the chain is
suddenly stopped by being pinched, ¢aught_ or by
contacting a tore_n object in the wood. Troisszopp_ng
ofthe chainresultsin a reverea]ofthe chain forceusedto
cutwood and causesthesawto moveinthe oppositedirec-
tionofthe chainrotation. E[therreactioncan resultinloss
of control and possibleserious injury.
_, Cut one log at a time.
• Use extreme caution when re-entering aprevious
cut.
•Do not attempt plunge cuts.
•Watchforshiftinglogsorotherforoesthatcouldclose
acut and pinch or fall into chain.
•Use the Reduced-Kickback Guide Bar and Low-
• Pinch.Kickback
- occurswhen chainon top of guide bar is suddenty
stopped.
-rapidlydfivessawstraightbacktowardoperator.
•Puli-ln
- OCcurswhen thechainonthe bottomofthe guide bar
is suddenly stopped.
-pulls the saw rapidlyforward.
,,,,,,,, i i,, ,i H,,,
sampleofchainsawsbelow3.8cubicinchdisplacementspe-
cifiedinANSIB175.1-1991,
•Handguard,designedtoreducethechanceofyourlefthand
contacting"{hechainifyour handsli.pcOffthe_ro_hand!elo_r.
•Positionof front and rear handlebars,oestgneOw_na=s-
tahoebetweenhandlesand =in-line with eachother, ine
spreadand=in4ine"positionofthehandsprovidedbythis de-
signworktogethertogivebalanceand resistar_cein.p?.ntro.I,-
lingthepivotofthesawbacktowardtheoperazor_ lac_acK
OCCURS.
•sawsas set bythe American Naliot_ Standaras _, .,
B TS+l-199 ..,........ "
_educe_ _c_ I_us T_P
Syra met_i_f Guide Bar
KICKBACK SAFETY FEATURES
I&No
THE FOLLOWING FEATURES ARE IN-
CLUDED ON YOUR SAW TO HELP REDUCE
THE HAZARD OF KICKBACK; HOWEVER,
SUCH FEATURES WILL NOT TOTALLY
ELIMINATE THIS DANGEROUS REACTION.
AS A CHAIN SAW USER, DO NOT RELY
ONLY ON SAFETY DEVICES. YOU MUST
FOLLOW ALL SAFETY PRECAUTIONS,
INSTRUCTIONS, AND MAINTENANCE IN
THIS MANUAL TO HELP AVOID KICKBACK
AND OTHER FORCES WHICH CAN RESULT
IN SERIOUS INJURY.
Reduced-KickbackGuide Bar,designedwithasmallradius
tip whichreducesthesize oftheIdckback dangerzoneonthe
guidebartip. Figure5. AReduced-KickbackGuideBarisone
whichhasbeen demonstratedtosignificantly reducethenum-
berand seriousness ofkickbackswhentestedin accordance
Kickback Chain specified for your saw.
, Hi i Jw, i H,,,I,H
with ANSI B175.1 ;*-1991
Low-Kickback Chain, designed with acontoured depth
gauge and guard link which deflect kickback force and allow
wood to gradually ride into the cutter. Figure 5. Low-K-Jckback
Chain is chain which has met £Jcl4_backperformance require*
ments of ANSI B175.1-1991 when tested on arepresentative
Cor_er_
• A,-_ _Wood
|_tO Cg_et
Syr_f_t _ 1_€_ p_ettt_J
Gui_e_ar P_d_usT=#
Figure5
-4-