Garmin EVA-2082S/1220, 353 manual Directional cuts, Felling cut

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WORKING TECHNIQUES

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.

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

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.

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

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.

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.

26 – English

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Contents Operator′s manual 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?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 Right hand guard Throttle lockoutChain catcher Vibration damping system Stop switchCutting equipment MufflerChain Cutting equipment designed to reduce kickbackBar Injuries Some terms that describe the bar and chainSharpening your chain and adjusting depth gauge setting General information on sharpening cutting teethTensioning the chain Filling with chain oil Lubricating cutting equipmentWhich could lead to serious, even fatal injuries Chain oil Checking chain lubricationNeedle bearing lubrication Checking wear on cutting equipmentFitting a spike bumper AssemblyFitting the bar and chain Working with the chainFuel Handling FuelTransport and storage Fuel safetyFuelling Long-term storageCold engine Starting and StoppingStarting and stopping Warm engineStopping Before use Basic safety rulesWorking Techniques General working instructionsJam. Always stop the engine before cleaning Limbing Basic cutting techniqueTerms Tree felling technique Safe distanceFelling direction Clearing the trunk and preparing your retreatDirectional cuts Felling cutFreeing 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? General MaintenanceCarburettor adjustment Correctly adjusted carburettor High speed jet HImmediately Checking the right-hand brake triggerChecking the brake trigger Muffler Changing a broken or worn starter cord Replacement of broken recoil and drive disc springsStarter Tensioning the recoil springLubricating the bar tip sprocket Air filterSpark plug Needle bearing lubricationRunning when making adjustments Adjustment of the oil pumpAir Injection centrifugal cleaning Cooling systemWinter use Temperature 0C or colderElectrical carburettor heating Maintenance 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 Page Page Page Original instructions 1153178-26
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