Husqvarna 334T, 338XPT manual Felling, Directional cuts

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WORKING TECHNIQUES

Several factors affect this:

Lean of the tree

Bend

Wind direction

Arrangement of branches

Weight of snow

You may find you are forced to let the tree fall in its natural direction because it is impossible or dangerous to try to make it fall in the direction you first intended.

Another very important factor, which does not affect the felling direction but does affect your safety, is to make sure the tree has no damaged or dead branches that might break off and hit you during felling.

WARNING! During critical felling operations,

!hearing protectors should be lifted immediately when sawing is completed so that sounds and warning signals can be heard.

Felling

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 cuts you begin with the top cut. Stand to the right of the tree and cut on the 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.

Use full throttle and bring the bar and chain 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.

24 – English

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Contents 334T 338XPT KEY to Symbols Symbols on the machineSymbols 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 sawAlways use common sense Machine′s safety equipment Personal protective equipmentChain brake and front hand guard General Safety Precautions Stop switch Throttle lockChain catcher Vibration damping systemCutting equipment MufflerGeneral rules Cutting equipment designed to reduce kickbackSharpening your chain and adjusting depth gauge setting General information on sharpening cutting teethGeneral advice on adjusting depth gauge setting Adjustment of depth gauge settingTensioning the chain Sharpening cutting teethLubricating cutting equipment Chain oilFilling with chain oil Checking chain lubricationChain drive sprocket Checking wear on cutting equipmentAssembly Fitting the bar and chainFuel Handling FuelFuel safety FuelingTransport and storage Long-term storageStarting and Stopping Starting and stoppingCold engine Warm engineStopping Basic safety rules Working TechniquesBefore use General working instructionsDo not let go of the handles Basic cutting technique GeneralTerms Felling technique for tree tops CuttingLimbing Safe distanceFelling Directional cutsGeneral advice Freeing a tree that has fallen badlyCutting trees and branches that are in tension How to avoid kickback What is kickback?Cutting the trunk into logs Maintenance Carburetor adjustmentGeneral Checking brake band wear Checking the front hand guardChecking the brake trigger Muffler Starter Changing a broken or worn starter cordTensioning the recoil spring Changing a broken recoil springAdjustment of the oil pump Air filterSpark plug Lubricating the bar tip sprocketCooling system Maintenance schedule Daily maintenance Weekly maintenance Monthly maintenanceTechnical Data Technical dataBar and chain combinations, model 334T Bar and chain combinations, model 338XPTSaw chain filing and file gauges Federal Emission Control Warranty Statement Your Warranty Rights and ObligationsAmerican Standard Safety Precautions Safety precautions for chain saw usersKickback safety precautions Other safety precautions´z+R*G¶55¨ Page 1150103-95 ´z+R*G¶55¨ ´z+R*G¶55¨
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