Husqvarna 1153179-26 manual Training we advise you not to fell trees, Your saw, Directional cuts

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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

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Contents
Operator′s manual 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 Chain catcher Throttle lockoutVibration damping system Stop switchCutting equipment Right hand guardCutting equipment designed to reduce kickback General rulesIncreases the risk of kickback Sharpening your chain and adjusting depth gauge settingGeneral information on sharpening cutting teeth Sharpening instructions considerablyToo large General advice on adjusting depth gauge settingAdjustment of depth gauge setting Tensioning the chainChecking 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 To prolong the life of the bar you should turn it over daily 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 use Clutch cover causing the chain to Cleaning Jam. Always stop the engine before Terms Basic cutting techniqueLog is supported at both ends. There is a high risk LimbingLogs are lying together. Such Or fatal injuryClearing the trunk and preparing your retreat Tree felling techniqueSafe distance Felling directionFelling cut Training we advise you not to fell treesYour saw Directional cutsCutting trees and branches that are in tension General adviceFreeing a tree that has fallen badly Freeing a trapped treeWhat is kickback? How to avoid kickbackCarburettor with movement limiters MaintenanceCarburettor adjustment GeneralLow speed jet L Fine adjustment of the idle speed TCorrectly adjusted carburettor Carburettor without movement limitersRpm 357XP 14000 2700 359 13500 Checking brake band wear Checking the front hand guardChecking the inertia brake release Immediately Muffler StarterChanging a broken or worn starter cord Fitting the starter Air filterTensioning the recoil spring Changing a broken recoil springNeedle bearing lubrication Adjustment of the oil pumpSpark plug Lubricating the bar tip sprocketCooling system Air Injection centrifugal cleaningTemperature 0C or colder Running when making adjustmentsHeated handles Electrical carburettor heating357 XPG, 359 G Daily maintenance Weekly maintenance Monthly maintenance Maintenance schedule357XP 359 Technical dataSaw chain filing and file gauges Bar and chain combinationsEC-declaration of conformity Applies to Europe onlyEN ISO 12100-22003, Cispr 122005, EN ISO Original instructions 1153179-26
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