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SAFETY RULES
Never Reverse
Hand Positions
Thumb On _,\]
Under Side Of _,_ "_
Handlebar _
Elbow _;'/m
Locked
Stand To //_
TheLe. t'
Of The Saw _ f
Figure 4
REDUCE THE CHANCE OF KICKBACK
• Recognize that kickback can happen. With a basic
understandingof kickback, you can reduce the element
of surpdse which contributesto accidents.
• Never let the moving chain eentact any object at the
tip of the guide bar. Figure2.
Keep the working area free from obstructions such
as other trees, branohes, rooks, fences, stumps, etc.
Figure 3. Eliminate or avoid any obstructionthat your
chaincould hit while you are cuttingthrougha particular
logor branch.
• Keep your chain sharp and properly tensioned. A
looseor dull chain can increasethe chance of kickback
to occur. Follow manufacturer's chain sharpening and
maintenance instructions. Check tension at regular in-
tervals with the engine stopped, never with the engine
running. Make sure the bar clamp nuts are securely
tightenedafter tensioning the chain.
• Begin and continue cutting at full throttle. If the
chain is moving at a slower speed, there is greater
chance for kickback tooccur.
• Cut one log at a time.
• Use extreme caution when re-entering a previous
cut.
Do not attempt plunge cuts,
• Watch for shifting logs or otherforcesthat could close
a cutand pinch or fall intochain.
Use the Reduced-Kickback Guide Bar and Low-
Kickback Chain specified for your saw.
MAINTAIN CONTROL
• Keep a good, firm grip on the saw with both hands
when the engine Is running end don't let go, Figure
4. Afirmgdpcanneutralizekickback and helpyou main-
taincontrolofthesaw. Keepthefingers ofyourlefthand
encirclingand yourleftthumbunderthe fronthandlebar.
Keep yourdght handcompletely aroundthe rear handle
whetheryou are dghthandedor left handed. Keep your
leftarm straightwiththe elbow locked.
• Pc,sltlon 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
reverse dght and lefthandpositionsfor anytype ofcut-
ting.
• Stand with your weight evenly balanced on both
feel
• Stand slightly to the left side of the saw to keep your
body from being In a direct line with the cutting
chain. Figure 4.
• Do not overreach. You could be drawn or thrown off
balance and losecontrolofthe saw.
• Do not cut above shoulder height. It is difficultto
maintain controlof saw above shoulder height.
UNDERSTANDING REACTIVE FORCES
Pinch-Kickback end Pull-In occur when the chain Is
suddenly stopped by being pinched, caught, or by
contacting a foreign oh|act In the wood. This stopping
ofthe chain resultsin a reversalof the chain force used to
cutwoodand causesthesawtomove intheOppositedirec-
tionofthe chainrotation. Eitherreaction can resultin loss
ofcontroland possibleserious injury.
• Pinch-Kickback
- occurswhen chain on top of guide bar is suddenly
stopped.
- rapidlydrivessaw straightback towardoperator.
• Pull-In
- occurswhenthechainonthebottomofthe guidebar
issuddenlystopped.
- pullsthe saw rapidlyforward.
KICKBACK SAFETY FEATURES
& WARNING
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-Kickback Guide Bar, designed witha small radius
tipwhich reduces the size ofthe kickbackdanger zone on the
guidebartip. Figure5. A Reduced-KickbackGuide Barisone
whichhas been demonstrated to significantlyreduce the num-
ber and seriousness of kickbackswhen tested in accordance
withANSI B175.t. 1991
Low--Klokbeck Chain, designed with a contoured depth
gauge and guard linkwhich deflect kickback force and allow
woodtograduallyrideintothecutter. Figure5. Low-Kickback
Chain ischain which has met kickback pedormance require-
ments of ANSI B175.1-1991 when testedon a representative
sample of chain sawsbelow3.8 cubic inch displacement spe-
cified in ANSI B175.1-1991.
Hendguard, designed to reduce the chance of your lefthand
contacting_e chain ifyour hand slips off the front handlebar.
Position of front sndresr handlebars, designed with dis-
tance between handles and "in-line"with each other. The
spread and =in-line" positionofthe hands provided bythis de-
_iing(nt_,/O_vtoO_toe_jertog_l_abc_,anwC_r_ndresislal_Crei_r_control_
• g p" to eope to " kickba
occurs.
ANSIel 75.1-1991- Safetyrequirementsforgasolinepoweredchain
sawsassetbytheAmedcanNationaJStandardsInstitute,Inc.,Stan-
dardB175.1-1991.
Reduced )Ockback Smell
Symmet,ical Guide Bar Radius T_O
Contour¢d
j/ Ded_Gauge Ek_ga_d
__ Guardk_
_min _. _ _edually Ride
_nto Cutter
Symmet,_cll Large
auk_ Bar RadkJSTip
Chain With High
_ Potlm_d
Figure5
-4-
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