Poulan 358.351080 User Manual - Page 4

k "'2"; SAFETY RULES Ha ! Under Side Of _ Handlebar | Elbow l_sLotcakend d"'_ t Of The Saw Figure4 REDUCE THE CHANCE OF KICKBACK • Recognize that kickback can happen. With a basic understandingof kicl_ack,you can reduce the element of surprisewhichcontributesto accidents. * Never let the moving chaincontact any object at the tip of the guide bar. Figure2. . Keep the working area free from obstructions such as other trees, branches,rocks,fences,stumps,etc.Figure3. Eliminate or avoidany obstructionthat your chain couldhit while you are cuttingthrougha particularlog or branch. , Keep your chain sharp and properly tenaioned.A loose or dull chaincan increasethe chance of kickbackto occur. Follow manufacturer'schainsharpeningand maintenance instructions.Check tension at regular intervals with the engine stopped,neverwith the engine running.Make sure the bar clamp nutsare securelytightenedafter tensioning the chain. • Begin and continue cutting at full throttle. If the chain is moving at a slowerspeed,there is greaterchance for kickback to occur. • 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 other forcesthat could close a cut and pinch or fall intochain. ° Use the Reduced-Kickback Guide Bar and Low- Kickback Chain specked for yoursaw. KICKBACK SAFETY FEATURES _ TOWHNAEYRFONOUILRNLGOS:AWWINTGOFEHAETLUPRREESDAURCEE INCLUDED THE HAZ- ARD 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 FORCESWHICH CAN RESULT IN SERIOUS INJURY. Reduced-Kickback Guide Bar, designed with a sma radius tip,which reduces the size of the kickback danger zone on me guioe par tip. Figure 5, A Reduced-Kickback Guide Bar is one which has been demonstrated to significantly reduce the number and seriousness of kickbacks when tested in accordance with ANSI B175.t-1991. Low-Kickback Chain, designed with a contoured depth gauge and guard link which deflect kickback force and allow wood to gradually ride into the cutter. Figure 5. LowKickback Chain is chain which has met kickback performance requirements of ANSI B175.1-1991 when tested on a representative sample of chain saws below 3.8 cubic -4- MAINTAIN CONTROL • Keep a good, firm grip on the saw with both hands when the engine is running and don't let go. Figure4. A firm grip can neutralize kickback and help you maintain controlof the saw. Keep the fingersof your left hand encircling and your left thumb under the front handlebar.Keep your righthand completely around the rear handle whether you are right handed or left handed. Keep your left arm straight withthe elbow locked, • Position your left hand on the front handlebar so it is in a sl_aight line with your right hand on the rear harp die when making bucking cuts. Figure4. Never reverse right and left hand positionsfor any type ofcutting. • 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. Figure4. • Do not overreach. You couldbe drawnor thrown offbalance and lose control of the saw. • Do not cut above shoulder heighL It is difficult to maintaincontrol of saw above shoulderheight. UNDERSTANDING REACTWE FORCES Pinch-Kickback and Puff-In occur when the chain is suddenly stopped by being pinched, caught, or by contacting a foreign object in the wood.This stoppingof the chain resultsin a reversal of the chain force used to cut wood and causesthe saw to move in the oppositedirectionof thechain rotationE. ither reaction can resultin loss of control and possibleseriousinjury. • Pinch-Kickback -occurs when chain on top of guide bar is suddenly stopped. - rapidlyd/_vessaw straightback towardoperator. • PulHn - occurswhen the chain on the bottomof the guide bar is suddenlystopped. - pulis the saw rapidly forward. inchdisplacement specified in ANSI B175.1-1991. Handguard, designed to reduce the chance of your left hand contactiQgthe.chain if your hand slipsoff the front handlebar, Position of front and rear handlebars, designed with distance between handles and =in-line" with each other. The spreadand =in-line" positionof the handsprovided by this design work together to give balance and resistance in centmlling the pivot of the saw back toward the operator if kickbackoccurs. ANS! B175.1-1991 - Safety requirements for gasotine powered chain saws as set by the ._nedcan NaSor_l Standards Institute, inc., Standard B175.1-1991. 2 ._ Dep_ Gauge Ek:ng_ ReducedlGdd_ck _nf_tettP..af G_i_} Bar Rad{usT_) Lo_-KL_Ee_ Chain _ To Gra_lualty Ride l_to C_ter { Sym_etricat Guide Bat Large Rad;u$ T'=p Male_l C_ain With H_gh Kick_¢_ Poter_ia_ Figure 5