Husqvarna 1153177-26 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.

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.

26 – English

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Contents 395XP, 395XPG 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 MufflerCutting equipment designed to reduce kickback Sharpening instructions considerably Sharpening your chain and adjusting depth gauge settingGeneral information on sharpening cutting teeth Increases the risk of kickbackTensioning the chain General advice on adjusting depth gauge settingAdjustment of depth gauge setting Too largeFilling with chain oil Lubricating cutting equipmentWhich could lead to serious, even fatal injuries Chain oil Checking chain lubricationChecking wear on cutting equipment Chain drive sprocketNeedle bearing lubrication OperatorFitting 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 Handles with both hands Basic cutting techniqueNot safely controlled with one hand GeneralLogs are lying together. Such Procedures drastically increase the riskLimbing Or fatal injuryFelling direction Tree felling techniqueSafe distance Clearing the trunk and preparing your retreatDirectional cuts Felling cutFreeing a tree that has fallen badly How to avoid kickbackWhat is kickback? Cutting the trunk into logs Carburettor with movement limiters MaintenanceCarburettor adjustment Carburettor without movement limiters Recommended engine speeds are as follows Checking brake band wear Checking the front hand guardChecking the inertia brake release ImmediatelyMuffler Changing a broken recoil spring Changing a broken or worn starter cordTensioning the recoil spring Lubricating the bar tip sprocket Air filterSpark plug Fitting the starterNeedle bearing lubrication Adjustment of the oil pumpAir Injection centrifugal cleaning Cooling systemWinter use Heated handlesMaintenance 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 Original instructions 1153177-26
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