Husqvarna 545, 550XPG manual Clearing the trunk and preparing your retreat, Felling cut, Your saw

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WORKING TECHNIQUES

there is high accident risk. See instructions under the heading Freeing a tree that has fallen badly.

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.

1

3

 

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.

1

2

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.

2

1

1

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

2

1Danger zone

2Retreat path

3Felling 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

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.

26 – English

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Contents Operator′s manual Decompression valve KEY to SymbolsSymbols on the machine Symbols in the operator’s manual 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 systemMuffler Stop switchCutting equipment General rulesCutting equipment designed to reduce kickback Sharpening your chain and adjusting depth gauge setting Lubricating cutting equipment Adjustment of depth gauge settingTensioning the chain Cause serious or even fatal injuryChain drive sprocket Filling with chain oilChecking chain lubrication Needle bearing lubricationChecking wear on cutting equipment Fitting a spike bumper AssemblyFitting the bar and chain Working with the chainFuel Handling FuelTransport and storage Fuel safetyFueling Long-term storageStarting Starting and StoppingStarting and stopping Cold engineStopping Before use Basic safety rulesWorking Techniques General working instructionsWorking Techniques Limbing Basic cutting techniqueTerms Felling direction Tree felling techniqueSafe distance Felling Training we advise you not to fell trees Clearing the trunk and preparing your retreatFelling cut Your sawFreeing 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 Immediately Checking the inertia brake releaseChecking the brake trigger Muffler Tensioning the recoil spring StarterChanging a broken or worn starter cord Changing a broken recoil spring Air filterSpark plug Fitting the starterLubricating the bar tip sprocket Adjustment of the oil pumpRunning when making adjustments Needle bearing lubricationWinter use Air Injection centrifugal cleaningTemperature 0C or colder Heated handlesMaintenance schedule Daily maintenance Weekly maintenance Monthly maintenanceTechnical Data Technical data550XP TrioBrake 550XPG Guide bar and chain combinations Saw chain filing and file gaugesEN ISO 12100-2/A12009, Cispr 122007, EN ISO EC-declaration of conformityApplies to Europe only Page Page
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