Husqvarna 1153183-26 Clearing the trunk and preparing your retreat, Felling cut, Directional cuts

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WORKING TECHNIQUES

IMPORTANT! During critical felling operations, hearing protectors should be lifted immediately when sawing is completed so that sounds and warning signals can be heard.

Clearing the trunk and preparing your retreat

Delimb the stem up to shoulder height. It is safer to work from the top down and to have the tree between you and the saw.

Remove any undergrowth from the base of the tree and check the area for obstacles (stones, branches, holes, etc.) so that you have a clear path of retreat when the tree starts to fall.Your path of retreat should be roughly 135 degrees away from the intended felling direction.

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Next make the bottom cut so that it finishes exactly at the end of the top cut.

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The directional cuts should run 1/4 of the diameter through the trunk and the angle between the top cut and bottom cut should be 45°.

The line where the two cuts meet is called the directional cut line. This line should be perfectly horizontal and at right angles (90°) to the chosen felling direction.

Felling cut

The felling cut is made from the opposite side of the tree and it must be perfectly horizontal. Stand on the left side of the tree and cut on the pull stroke.

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

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1Danger zone

2 Retreat path

3 Felling direction

Felling

WARNING! Unless you have special

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

Felling is done using three cuts. First you make the directional cuts, which consist of the top cut and the bottom cut, then you finish with the felling cut. By placing these cuts correctly you can control the felling direction very accurately.

Directional cuts

To make the directional cut you begin with the top cut. Aim using to the saw’s felling direction mark (1) toward a goal further forward in the terrain, where you would like the tree to fall (2). Stand on the right-hand side of the tree, behind the saw, and cut with a pull stroke.

Set the spike bumper (if one is fitted) just behind the felling hinge. Use full throttle and advance the chain/bar 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.

26 – English

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Contents 3120XP Symbols in the operator’s manual KEY to SymbolsSymbols on the machine Contents Introduction Dear CustomerWhat is WHAT? What is what on the chain saw?Always use common sense General Safety PrecautionsBefore using a new chain saw Chain brake and front hand guard Machine′s safety equipmentPersonal protective equipment General Safety Precautions Right hand guard Throttle lockoutChain catcher Vibration damping systemMuffler Stop switchCutting equipment General rulesChain Sharpening your chain and adjusting depth gauge settingBar General information on sharpening cutting teethToo large Increased if the depth gauge setting isAdjustment of depth gauge setting Cause serious or even fatal injury Tensioning the chainLubricating cutting equipment Filling with chain oilNeedle bearing lubrication Checking chain lubricationChain drive sprocket Checking wear on cutting equipmentBar Working with the chain AssemblyFitting the bar and chain Fuel Handling FuelExtra chain oil Fuel safetyFuelling Transport and storage Long-term storageCold engine Starting and StoppingStarting and stopping Warm engineStopping Before use Basic safety rulesWorking Techniques General working instructionsWorking Techniques Limbing Basic cutting techniqueTerms Felling direction Tree felling techniqueSafe distance Directional cuts Clearing the trunk and preparing your retreatFelling cut Freeing a trapped tree General adviceFreeing a tree that has fallen badly Cutting trees and branches that are in tensionCutting the trunk into logs How to avoid kickbackWhat is kickback? Maintenance CarburettorCorrectly adjusted carburettor High speed jet HChecking the brake trigger Changing a broken or worn starter cord MufflerStarter Fitting the starter Tensioning the recoil springChanging a broken recoil spring Lubricating the bar tip sprocket Air filterSpark plug Needle bearing lubrication Adjustment of the oil pumpRunning when making adjustments Cooling systemMaintenance schedule Daily maintenance Weekly maintenance Monthly maintenanceTechnical Data Technical dataBar and chain combinations Saw chain filing and file gaugesEN ISO 12100-22003, Cispr 122005, EN ISO EC-declaration of conformityApplies to Europe only 0404/09/2119Page Page Page Page Original instructions 1153183-26
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