Husqvarna 346XP EPA II How to avoid kickback, What is kickback?, Cutting the trunk into logs

Page 28

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.

28 – English

Image 28

Contents Operator’s manual 346XP EPA II 353 EPA KEY to Symbols Symbols on the machineSymbols in the operator’s manual You will ﬁnd the following labels on your chain sawContents Introduction Dear customerWhat is WHAT? What is what on the chain saw?Before using a new chain saw General Safety PrecautionsAlways use common sense Personal protective equipment Machine′s safety equipmentChain brake and front hand guard General Safety Precautions Chain catcher Throttle lockoutRight hand guard Stop switch Cutting equipmentVibration damping system MufﬂerGeneral rules Cutting equipment designed to reduce kickbackBar ChainSharpening your chain and adjusting depth gauge setting General information on sharpening cutting teethSharpening cutting teeth Instructions considerably increases the risk of kickbackGeneral advice on adjusting depth gauge setting Adjustment of depth gauge settingIf the depth gauge setting is too large Tensioning the chainLubricating cutting equipment Chain oilFilling with chain oil Checking chain lubricationNeedle bearing lubrication Chain drive sprocketChecking wear on cutting equipment Assembly Fitting the bar and chainFuel Handling FuelFuel safety FuelingTransport and storage Long-term storageStarting and Stopping Starting and stoppingCold engine Warm engineStopping Basic safety rules Working TechniquesBefore use General working instructionsGeneral rules General Basic cutting techniqueTerms Limbing CuttingTree felling technique Safe distanceFelling direction Clearing the trunk and preparing your retreatDirectional cuts FellingFelling cut General advice Freeing a tree that has fallen badlyFreeing a trapped tree Cutting trees and branches that are in tensionWhat is kickback? How to avoid kickbackCutting the trunk into logs Carburetor adjustment MaintenanceGeneral Correctly adjusted carburetor High speed jet HThrottle lockout Starter MufﬂerChanging a broken or worn starter cord Air ﬁlter Spark plugTensioning the recoil spring Changing a broken recoil springAdjustment of the oil pump When making adjustmentsLubricating the bar tip sprocket Needle bearing lubricationAir Injection centrifugal cleaning Temperature 0C 32F or colderWinter use Heated handlesMaintenance schedule Daily maintenance Weekly maintenance Monthly maintenanceTechnical Data Technical dataBar and chain combinations Saw chain ﬁling and ﬁle gauges050/1,3 mm 058/1,5 mmFederal Emission Control Warranty Statement Your Warranty Rights and ObligationsAmerican Standard Safety Precautions Safety precautions for chain saw usersKickback safety precautions Other safety precautionsPage ´z+RA¶5t¨ Page 1150339-95 ´z+RA¶5t¨ ´z+RA¶5t¨