Husqvarna 1153176-26 Freeing a tree that has fallen badly, Felling cut, Freeing a trapped tree

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WORKING TECHNIQUES

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.

There are methods for felling trees with a diameter larger than the bar length. However these methods involve a much greater risk that the kickback zone of the bar will come into contact with the tree.

Freeing a tree that has fallen badly

Freeing a ”trapped tree”

It is very dangerous to remove a trapped tree and there is high accident risk.

Never try to fell the tree that is trapped.

Never work in the risk zone of the hanging trapped tree.

The safest method is to use a winch.

•Tractor-mounted

26 – English

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Contents 385XP 385XPG 390XP 390XPG 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?Always use common sense General Safety PrecautionsBefore using a new chain saw Chain brake and front hand guard Machine′s safety equipmentPersonal protective equipment General Safety Precautions Right hand guard Throttle lockoutChain catcher Vibration damping systemMufﬂer Stop switchCutting equipment General rulesChain 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 Lubricating cutting equipmentChain 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 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 Basic cutting technique TermsSafe distance Tree felling techniqueLimbing Felling directionClearing the trunk and preparing your retreat Directional cutsFreeing a trapped tree Freeing a tree that has fallen badlyFelling cut General advice How to avoid kickbackWhat is kickback? Cutting trees and branches that are in tensionCutting the trunk into logs General MaintenanceCarburettor adjustment Carburettor without movement limiters Recommended engine speeds are as follows Checking the front hand guard When the bar hits the stump the brake should be appliedChecking brake band wear Checking the inertia brake releaseChecking the brake trigger ImmediatelyMufﬂer Tensioning the recoil spring StarterChanging a broken or worn starter cord Changing a broken recoil springFitting the starter Air ﬁlterSpark plug Must always be replacedNeedle bearing lubrication Adjustment of the oil pumpLubricating the bar tip sprocket Cooling systemWinter use Air Injection centrifugal cleaningTemperature 0C or colder Heated handlesMaintenance schedule Daily maintenance Weekly maintenance Monthly maintenanceTechnical Data Technical dataBar and chain combinations Saw chain ﬁling and ﬁle gaugesEC-declaration of conformity Applies to Europe onlyPage Original instructions 1153176-26