Husqvarna 570 576 XP manual Freeing a tree that has fallen badly, Freeing a trapped tree

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WORKING TECHNIQUES

All control over the felling direction is lost if the felling hinge is too narrow or non-existent, or if the directional cuts and felling cut are badly placed.

When the felling cut and directional cut are complete the tree should start to fall by itself or with the aid of a felling wedge or breaking bar.

We recommend that you use a bar that is longer than the diameter of the tree, so that you can make the felling cut and directional cuts with single cutting strokes. See instructions under the heading Technical data section to ﬁnd out which lengths of bar are recommended for your saw.

There are methods for felling trees with a diameter larger than the bar length. However these methods involve a much greater risk that the kickback zone of the bar will come into contact with the tree.

Freeing a tree that has fallen badly

Freeing a ”trapped tree”

It is very dangerous to remove a trapped tree and there is high accident risk.

Never try to fell the tree that is trapped.

Never work in the risk zone of the hanging trapped tree.

The safest method is to use a winch.

•Tractor-mounted

•Portable

Cutting trees and branches that are in tension

Preparations: Work out which side is in tension and where the point of maximum tension is (i.e. where it would break if it was bent even more).

Decide which is the safest way to release the tension and whether you are able to do it safely. In complicated situations the only safe method is to put aside your chain saw and use a winch.

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Contents 570 576 XP KEY to Symbols Symbols on the machineSymbols in the operator’s manual Contents Dear Customer IntroductionWhat is what on the chain saw? What is WHAT?Before using a new chain saw General Safety PrecautionsChain brake and front hand guard Machine′s safety equipmentAlways use common sense Personal protective equipmentGeneral Safety Precautions Throttle lockout Chain catcherRight hand guard Mufﬂer Stop switchCutting equipment Vibration damping systemInjuries Some terms that describe the bar and chain Cutting equipment designed to reduce kickbackBar ChainGeneral information on sharpening cutting teeth Sharpening your chain and adjusting depth gauge settingTensioning the chain Checking chain lubrication Lubricating cutting equipmentWhich could lead to serious, even fatal injuries Chain oil Filling with chain oilChain drive sprocket Needle bearing lubricationChecking wear on cutting equipment Working with the chain AssemblyFitting the bar and chain Fitting a spike bumperFuel Fuel HandlingLong-term storage Fuel safetyFuelling Transport and storageWarm engine Starting and StoppingStarting and stopping Cold engineStopping General working instructions Basic safety rulesWorking Techniques Before useGeneral rules Terms Basic cutting techniqueLimbing Clearing the trunk and preparing your retreat Tree felling techniqueSafe distance Felling directionFelling cut Directional cutsFreeing a tree that has fallen badly Freeing a trapped treeCutting trees and branches that are in tension Cutting the trunk into logs How to avoid kickbackWhat is kickback? General adviceMaintenance Carburettor adjustmentGeneral Checking the front hand guard Correctly adjusted carburettorHigh speed jet H Checking brake band wearImmediately Checking the inertia brake releaseMufﬂer Changing a broken recoil spring StarterChanging a broken or worn starter cord Tensioning the recoil springAir ﬁlter Spark plugLubricating the bar tip sprocket Needle bearing lubrication Adjustment of the oil pumpAir Injection centrifugal cleaning Running when making adjustmentsHeated handles Winter useDaily maintenance Weekly maintenance Monthly maintenance Maintenance scheduleTechnical data Technical DataEN ISO 12100-22003, Cispr 122001, EN ISO Bar and chain combinationsSaw chain ﬁling and ﬁle gauges EC-declaration of conformity Applies to Europe onlyPage Page ´z+SÆ6¶6w¨ Page 1151002-26