Husqvarna 965167936 manual How to avoid kickback, What is kickback?, Cutting the trunk into logs

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WORKING TECHNIQUES

How to avoid kickback

WARNING! Kickback can happen very

!suddenly and violently; kicking the chain saw, bar and chain back at the user. If this happens when the chain is moving it can cause very serious, even fatal injuries. It is vital you understand what causes kickback and that you can avoid it by taking care and using the right working technique.

What is kickback?

The word kickback is used to describe the sudden reaction that causes the chain saw and bar to jump off an object when the upper quadrant of the tip of the bar, known as the kickback zone, touches an object.

Kickback always occurs in the cutting plane of the bar. Normally the chain saw and bar are thrown backwards and upwards towards the user. However, the chain saw may move in a different direction depending on the way it was being used when the kickback zone of the bar touched the object.

Kickback only occurs if the kickback zone of the bar touches an object.

Limbing

WARNING! A majority of kickback

! accidents occur during limbing. Do not use the kickback 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.

Make sure that you can stand and move about safely. Work on the left side of the trunk. Work as close as possible to the chain saw for maximum control. If possible, let the weight of the chain saw rest on the trunk.

Keep the trunk between you and the chain saw as you move along the trunk.

Cutting the trunk into logs

See instructions under the heading Basic cutting technique.

30 – English

115 10 82-26 Rev.2 2008-06-03

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Contents 435 435e 440e EnglishKEY to Symbols Symbols on the machineSymbols in the operator’s manual Contents Introduction Dear CustomerWhat is WHAT? What is what on the chain saw?General Safety Precautions Before using a new chain sawPersonal protective equipment Machine′s safety equipmentAlways use common sense Chain brake and front hand guardGeneral Safety Precautions Throttle lockout Chain catcherVibration damping system Stop switchRight hand guard MufﬂerCutting equipment General rulesCutting equipment designed to reduce kickback Sharpening your chain and adjusting depth gauge setting General information on sharpening cutting teethTensioning the chain 435 435e, 440eFilling with chain oil Lubricating cutting equipmentWhich could lead to serious, even fatal injuries Chain oil Checking chain lubricationChain drive sprocket Needle bearing lubricationChecking wear on cutting equipment 435 AssemblyFitting the bar and chain 435e, 440eFitting a spike bumper Fuel Handling FuelTransport and storage Fuel safetyFuelling Long-term storageStarting and Stopping Starting and stoppingStarting Stopping Before use Basic safety rulesWorking Techniques General working instructionsGeneral rules Basic cutting technique TermsTree felling technique LimbingSafe distance Felling direction Clearing the trunk and preparing your retreatDirectional cuts Felling cut Freeing a trapped tree General adviceFreeing a tree that has fallen badly Cutting trees and branches that are in tensionHow to avoid kickback What is kickback?Cutting the trunk into logs Maintenance Carburettor adjustmentGeneral Checking the inertia brake release ImmediatelyMufﬂer Starter Replacing the starter cordTensioning the recoil spring Air ﬁlter Replacing the return and drive springsFitting the starter Needle bearing lubrication Spark plugLubricating the bar tip sprocket Cooling systemAir Injection centrifugal cleaning Temperature -5C or colderWinter use Maintenance schedule Daily maintenance Weekly maintenance Monthly maintenanceTechnical Data Technical dataBar and chain combinations Saw chain ﬁling and ﬁle gaugesEC-declaration of conformity Applies to Europe onlyEN ISO 12100-22003, Cispr 122005, EN ISO ´z+S6¶68¨ Page 1151082-26