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Husqvarna Chain Saw, Operator'S Safety & Operating Instruction Manual, Page: 32 / 42

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Husqvarna Chain Saw Operator'S Safety & Operating Instruction Manual Download Page 32

BASIC WORKING TECHNIQUES

32

Boring Cut

A boring cut is used to fell large trees. Follow the steps
listed below when performing a boring cut.

1. Cut, using the bottom portion of the guide bar tip, until

the depth of the cut is equal to the width of the guide
bar and deep enough to stop a kickback during steps
2 and 3.

2. Operating at full throttle, align the saw with the

direction of cut.

3. With saw at full throttle, press the guide bar straight

into the trunk.

WARNING!

Making a boring cut can be dangerous if improperly
performed. Only properly trained operators should
attempt this technique.

STEP 1

STEP 3

STEP 2

#

USE THIS PORTION OF THE TIP
WHEN STARTING A BORING CUT.

KICKBACK ZONE

For Husqvarna Parts Call 606-678-9623 or 606-561-4983

www.mymowerparts.com

Summary of Contents for Chain Saw

Page 1: ...T THAT YOU FULLY UNDERSTAND THE CONTENTS OF THIS MANUAL AND THAT YOU ALLOW ONLY COMPETENT ADULTS WHO UNDERSTAND THE INFORMATION IN THIS MANUAL TO OPERATE YOUR CHAIN SAW IT IS YOUR RESPONSIBILITY TO MAKE SURE THAT ANY PERSONS WHO USE YOUR CHAIN SAW HAVE READ AND UNDERSTOOD THIS MANUAL 114 00 08 95 For Husqvarna Parts Call 606 678 9623 or 606 561 4983 www mymowerparts com ...

Page 2: ...der to remove the clutch structural damage to the fly wheel could occur and subsequently cause the flywheel to burst r When transporting your chain saw use the appropriate guide bar scabbard Note This Annex is intended primarily for the consumer or occasional user ANSI B 175 1 2000 Annex C Safety precautions for chain saw users C 1 Kickback safety precautions WARNING KICKBACK may occur when the no...

Page 3: ...ipment 20 21 Carbon Monoxide Poisoning 22 Hearing Loss 22 Vibration Injury 23 Crushing Fracture or Puncture 24 Burns Fire 25 BEFORE STARTING AFTER STARTING Safety Check 26 28 Carrying the Saw 28 Starting the Saw 29 Holding the Saw 30 After Starting the Saw 30 Stopping the Saw 30 BASIC WORKING TECHNIQUES General Rules 31 Reactive Forces 31 Boring Cut 32 Felling 33 35 Lodged Trees 36 37 Limbing 37 C...

Page 4: ...ly competent adults who understand the information in this manual to operate your chain saw It is your responsibility to make sure that any people who use your chain saw have read and understood this manual WARNING Do not modify the equipment for any reason Altering the chain saw can result in operator injury or equipment failure WARNING Safety is your responsibility Read and understand this manua...

Page 5: ...aw Use common Sense Your chain saw can be a very dangerous tool if improperly or carelessly used or if improperly equipped or maintained Use common sense and caution at all times Avoid situations that may be too dangerous or complicated for you If you still feel you do not understand the dangers of using a chain saw after having read these instructions you should not use the saw Seek personal inst...

Page 6: ...afer in adverse weather Never wear loose fitting clothing jewelry etc which could become entangled in the saw and cause serious injury Manuals Your chain saw comes with two instruction manuals This Safety Manual contains general information in how to operate your chain saw in a safe way The Operator s Manual gives specific information on the technical design and maintenance regarding your particul...

Page 7: ...face shield protects the face from strikes from small branches and eyes from saw chips and dust The mesh in the face shield many logging helmets are equipped with is intended to protect your face from branches twigs and saw dust generated during cutting It is not strong enough to protect you eyes from sharp particles that may be thrown at you Therefore we also recommend you also wear protective go...

Page 8: ...recommended for a chain saw Felling Lever and Hook The felling lever is used to assist in felling a tree The hook can be used to move a felled tree Fire Extinguisher and Shovel Used to extinguish fires IMPORTANT Use caution in dry conditions A chain saw can generate sparks hot enough to ignite dry grass or chips The sparks can come from the muffler the bar and chain or other sources Check with loc...

Page 9: ...nt handle Also designed to reduce the risk of your hand touching the saw chain if your hand slips off the front handls Chain Brake The chain brake is designed to stop the saw chain if activated while the saw chain is running or can act as a parking brake while the chain saw is idling to help prevent the saw chain from moving Throttle Trigger Lockout Designed to prevent the accidental operation of ...

Page 10: ...operator s hand in the event of chain breakage Chain catcher Located under the chain as far forward as is practically possible and designed to catch a broken or jumping chain Stop Switch Used to stop the engine REAR HAND GUARD CHAIN CATCHER STOP SWITCH For Husqvarna Parts Call 606 678 9623 or 606 561 4983 www mymowerparts com ...

Page 11: ...that you always have the spark arrestor screen installed Help prevent forest fires In certain states the spark arrestor is mandatory Never use your chain saw without a spark arrestor screen if required in your area CAUTION Never use a saw without a muffler or with a damaged muffler A damaged muffler may substantially increase the noise level and the fire hazard Keep fire fighting equipment handy I...

Page 12: ... dealing with kickback Straight Guide Bars Guide bars come in many different types and shapes The design of the nose radius is especially important The smaller the radius the smaller the kickback zone The smaller the kickback zone the less likely a kickback will occur A smaller radius also decreases the kickback force The guide bar nose radius is determined by either the number of teeth in the spr...

Page 13: ...r zone of a straight guide bar The kickback danger zone on the bow guide bar is much larger than on a straight guide bar Improperly used bow guide bars can produce a more severe kickback than a straight guide bar Do not use a chain saw with a bow guide unless you have extraordinary cutting needs experience and specialized training in dealing with kickback The special Operator s Manual Bow Guides i...

Page 14: ...protection Used by professional loggers Do not use this type of saw chain unless you have specialized training for dealing with kickback Saw chains with more reduced kickback potential are available Low kickback saw chain Recommended for all kinds of cutting for the occasional operator Low kickback saw chain Offers the best kickback protection Mostly used on chain saws intended for casual operator...

Page 15: ... during felling for example plan your route of escape before you begin cutting Shut off the saw when possible Carry your chain saw safely with the chain to the rear see page 28 Hold the saw firmly with both hands when the engine is running Wear protective equipment as described on page 7 Do not allow other people or animals in your work area Activate the chain brake when starting the saw and when ...

Page 16: ... very powerful If you are not paying attention and or have a poor grip the saw can be thrown all the way back at you If the chain is still running and it hits you it will severely cut you Rotational Kickback Kickback can occur when the upper tip of the guide bar the kickback zone touches something such as a trunk branch or other object When the nose is used only one or two cutters engage the wood ...

Page 17: ...d the chain saw a kickback may come up and back at you or move in any angle you happened to hold the chain saw in For example if you experience a kickback during felling the chain saw will move in the horizontal plane and can swing around and hit your leg IMPORTANT Kickback can only occur if the kickback danger zone of the bar touches an object A kickback can be lightning fast Although most kickba...

Page 18: ...ngers associated with chain saws is through proper working technique Avoid These Situations Do not use the kickback danger zone when cutting As kickback can only occur when the kickback danger zone on the tip of the bar touches an object kick back can be completely avoided by not cutting with that part Make sure that the area in which you are working is free from obstructions Do not let the nose o...

Page 19: ...ough time to slow down the saw chain if the kickback starts from an unsafe position close to your body even if the brake is activated Do not overreach or work from an unsafe position such as ladders in a tree or a pile of wood In such situations your footing is insecure and you can easily cut yourself either through a simple distraction or through a kickback because your control of the saw is insu...

Page 20: ...ever rely entirely on these safety devices for your protection Rely on your safe working technique As explained previously kickback can be avoided by using safe cutting techniques where at all times you avoid cutting with the tip of the bar However certain items on your chain saw are also designed to minimize the kickback itself or possible injuries should you encounter a kickback Low Kickback Saw...

Page 21: ...on Will My Inetria Activated Chain Brake Always Activate During Kickback in the Event of a Kickback No First your brake must be in working order Testing the brake is simple We recommend you do before you begin each work pass Second the kickback must be strong enough to activate the chain brake If the chain brake is too sensitive it would activate all the time which would be a nuisance Will My Chai...

Page 22: ...aust odors are noticed carbon monoxide is present Never use your gasoline powered chain saw indoors in a trench or other confined area with poor ventilation where the exhaust fumes are not ventilated away Hearing Loss CAUTION A chain saw produces a noise level high enough to permanently damage your hearing after long or continuous exposure Always wear hearing protection when operating a chain saw ...

Page 23: ...ion disorders or abnormal swelling Among the conditions that may be associated with blood vessel and nerve damage are Raynaud s Syndrome white finger disease and carpal tunnel syndrome If symptoms occur such as numbness loss of feeling tingling pain loss of strength change in skin color or texture or any other abnormal sensation or feeling in the fingers hands or wrists discontinue use of the chai...

Page 24: ...s capable of throwing objects such as sawdust small pieces of wood etc with great force and can cause serious injury especially to the eyes The mesh in the face shield many logging helmets are equipped with is intended to protect your face from branches twigs and saw dust generated during cutting It is not strong enough to protect your eyes from sharp particles that may be thrown at you Thererore ...

Page 25: ...your area Touching a hot muffler causes burns A hot muffler or hot exhaust gases can start a fire in combustible material Spills or improper handling of fuel or gasoline can cause fire or explosion Some states in the USA require testing and approval of muffler design and exhaust gas temperatures Do not modify your muffler as it may be unlawful to operate a modified saw and you might start a forest...

Page 26: ...ious injury or death A loose chain is also the main reason for excessive wear and damage to the bar and chain Bar and chain installation is explained in the Maintenance Section of your Operator s Manual A properly adjusted chain is tight but you should always be able to turn the chain freely with a gloved hand Allow the bar to cool before adjustment Check after tensioning by pulling the chain in t...

Page 27: ...njury or death Replace entire saw chain if it is damaged or broken Keep chain properly sharpened lubricated and correctly tensioned Chain breakage is almost always the result of poor maintenance Inspect rivets and links on saw chain for cracks and other defects before using Do not use a damaged saw chain Always use a filing gauge to achieve correct setting when filing depth gauges Depth gauges set...

Page 28: ...in place and undamaged 8 Be sure all handles are clean and free from oil 9 Check entire saw for loose fasteners and damaged or missing components Carrying The Saw 1 Always turn off the engine before walking with the saw 2 Do not leave the saw unattended while the engine is running 3 Install guide bar scabbard on guide bar before carrying saw 4 Carry the saw with the bar pointing to the rear and wi...

Page 29: ...otate after starting with throttle latch engaged if the chain brake is not activated B A 6 Apply a short sharp pull to the starter rope repeat until engine starts IMPORTANT Hold the starter handle as the rope retracts If you allow the starter rope to pull in by itself the fast action may damage the starter 7 Immediately press and release the throttle when the enginge starts That will disengage the...

Page 30: ... the saw with one hand when working is dangerous The saw cannot be properly controlled As you have less control of the saw it has a tendency to bounce and skate when you start cutting Under those circumstances the saw may cut you Because of your lack of control you are also more likely to get a kickback In the event of a kickback a manual chain brake cannot be activated After Starting The Saw 1 Be...

Page 31: ...ng operations when it is easier to pinch the chain or to touch a limb by mistake 2 Keep your feet firmly planted in a wide balanced stance 3 Keep the saw body close to your body to improve control and to reduce strain 4 When cutting with the bottom part of the chain pulling chain the reactive force will pull the saw away from you towards the wood you are cutting The sawdust will be directed toward...

Page 32: ...o stop a kickback during steps 2 and 3 2 Operating at full throttle align the saw with the direction of cut 3 With saw at full throttle press the guide bar straight into the trunk WARNING Making a boring cut can be dangerous if improperly performed Only properly trained operators should attempt this technique STEP 1 STEP 3 STEP 2 USE THIS PORTION OF THE TIP WHEN STARTING A BORING CUT KICKBACK ZONE...

Page 33: ...n of the tree Look for decay and rot in the trunk which will make it more likely to snap and start to fall before you expect it Look for dry branches which may break and hit you when you are working Always keep animals and people at least twice the tree length away while felling Clear away shrubs and branches from around the tree Prepare a path of retreat diagonally away from the felling direction...

Page 34: ...trol over the felling direction 4 Insert a wedge or a felling lever in the cut well before the tree becomes unstable and starts to move A This will prevent the guide bar from binding in the felling cut if you have misjudged the falling direction Be sure no people have come into the range of the falling tree before you push it over Felling Cut Trunk Diameter Less than Guide Bar Length Saw with a pu...

Page 35: ...ling lever Felling Leaning Trees CAUTION Excessively leaning trees are under tension and may split easily causing root end to rise up or be thrown rearwards 1 Make two notches The tip formed where the notches meet should point toward the felling direction 2 Make the felling cut straight from behind a bit at a time This method will slow the fall of the tree and allow you to get clear NOTCH NOTCH FE...

Page 36: ...lways choose a safe method even if it takes a little longer Simple Hang Ups Rolling the Tree 1 Determine direction tree can most easily be rolled down 2 Cut tree loose from hinge leaving a little on the side you intend it to roll down on 3 Using a cant hook or similar tool roll the tree away from you 4 Lift with a straight back CAUTION If you are not properly positioned when the tree starts to mov...

Page 37: ...zone of the guide bar Be extremely cautious and avoid contacting the log other limbs or objects with the nose of the guide bar Be extremely cautious of limbs under tension They can spring back toward you and cause loss of control resulting in injury 1 Stand on the left side of the trunk 2 Maintain a secure footing and rest the saw on the trunk 3 Maintain full control by holding saw close to you WA...

Page 38: ...well as increasing the risk of losing your balance while working Cutting Shrubs Brush etc WARNING Do not use a chain saw to cut shrubs brush etc The possibilities of kickback are high A kickback can cause severe injury Use a brush cutter or other tool that has been designed for the purpose Do not use your chain saw to cut shrubs brush etc The possibility of kickback is high If the stands are close...

Page 39: ...utting at the breaking point the longest section of the stem besides trying to push outwards will also try to push along the trunk after it has broken That makes the forces harder to predict and increases the danger WARNING Using improper techniques while cutting trees or limbs under tension can be extremely dangerous The instructions above cover basic procedures but do not cover all possible situ...

Page 40: ...ng you time to back out of the way Small Trees and Limbs Under Tension 1 Always stay on the inside of the bend 2 Make your cut at the breaking point 3 If possible cut along the tree limb 4 Cut slowly to relieve tension CAUTION Stay clear of tree limb path 5 If you must cut across tree limb make two to three cuts one inch apart one to two inches deep 6 Continue to cut deeper until tree limb bends a...

Page 41: ...For Husqvarna Parts Call 606 678 9623 or 606 561 4983 www mymowerparts com ...

Page 42: ...Husqvarna 2002 Printed in USA For Husqvarna Parts Call 606 678 9623 or 606 561 4983 www mymowerparts com ...

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