Husqvarna 1153158-95 manual Freeing a tree that has fallen badly, Felling cut, General advice

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WORKING TECHNIQUES

Felling cut

The felling cut is made from the opposite side of the tree and it must be perfectly horizontal. Try to take a correct position so you are able to cut on the pull stroke.

Make the felling cut about 1.5-2 inches (3-5 cm) above the bottom directional cut.

Use full throttle and bring the bar and chain slowly into the tree. Make sure the tree does not start to move in the opposite direction to your intended felling direction. Drive a wedge or breaking bar into the cut as soon as it is deep enough.

Finish the felling cut parallel with the directional cut line so that the distance between them is at least 1/10 of the trunk diameter. The uncut section of the trunk is called the felling hinge.

The felling hinge controls the direction that the tree falls in.

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.

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 the

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.

WARNING! Unless you have special

! training we advise you not to fell trees with a diameter larger than the bar length of your saw!

Freeing a tree that has fallen badly

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.

General advice:

Position yourself so that you will be clear of the tree or branch when the tension is released.

Make one or more cuts at or near the point of maximum tension. Make as many cuts of sufficient depth as necessary to reduce the tension and make the tree or branch break at the point of maximum tension.

Never cut straight through a tree or branch that is in tension!

28 – English

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Contents 334T 338XPT Symbols on the machine KEY to SymbolsSymbols in the operator’s manual EPA Contents Introduction Dear customerWhat is WHAT? What is what on the chain saw?Before using a new chain saw General Safety PrecautionsAlways use common sense Machine′s safety equipment Personal protective equipmentChain brake and front hand guard Chain catcher Throttle lockoutVibration damping system Stop switch Cutting equipmentMuffler General rulesBar ChainSharpening your chain and adjusting depth gauge setting General information on sharpening cutting teethTensioning the chain Filling with chain oil Lubricating cutting equipmentChecking chain lubrication Chain drive sprocket Checking wear on cutting equipmentFitting the bar and chain AssemblyWorking with the chain Fuel 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 instructionsDo not let go of the handles Using the chainsaw in the tree General requirements working at heightPreparing to use the saw in the tree Securing the work position for two-handed useBasic cutting technique Limbing Felling direction Felling technique for tree topsDirectional cuts General advice Freeing a tree that has fallen badlyFelling cut Cutting trees and branches that are in tensionWhat is kickback? How to avoid kickbackCutting the trunk into logs Maintenance CarburetorCorrectly adjusted carburetor High speed jet HThrottle lockout Starter MufflerChanging a broken or worn starter cord Air filter Tensioning the recoil springChanging a broken recoil spring Fitting the starterAdjustment of the oil pump When making adjustmentsSpark plug Lubricating the bar tip sprocketMaintenance schedule Daily maintenance Weekly maintenance Monthly maintenanceTechnical Data Technical dataBar and chain combinations, model 338XPT Bar and chain combinations, model 334TSaw chain filing and file gauges Federal and California Emissions Control Warranty Your Warranty Rights and ObligationsEmission Warranty Parts List American Standard Safety Precautions Safety precautions for chain saw usersKickback safety precautions Other safety precautionsPage Page Original instructions 1153158-95

1153158-95 specifications

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