Directional cuts, Felling cut | Husqvarna 1150902-95 guide

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

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.

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Husqvarna 1150902-95 manual Directional cuts, Felling cut

Contents

455e Rancher Rancher 460 Rancher Symbols in the operator’s manual KEY to SymbolsSymbols on the machine EPA Contents Dear customer Introduction What is what on the chain saw? What is WHAT? Before using a new chain saw General Safety Precautions Always use common sense Machine′s safety equipmentPersonal protective equipment Chain brake and front hand guard General Safety Precautions Right hand guard Throttle lockoutChain catcher Cutting equipment Stop switchVibration damping system Mufﬂer Chain Cutting equipment designed to reduce kickbackBar General information on sharpening cutting teeth Sharpening your chain and adjusting depth gauge setting Tensioning the chain 455e Rancher Lubricating cutting equipmentFilling with chain oil Checking chain lubrication Checking wear on cutting equipment Chain drive sprocketNeedle bearing lubrication Bar Fitting the bar and chain AssemblyRancher, 460 Rancher 455e Rancher Assembly Fuel Fuel Handling Fueling Fuel safetyTransport and storage Long-term storage Starting and stopping Starting and StoppingCold engine Warm engine Stopping Working Techniques Basic safety rulesBefore use General working instructions General rules Terms Basic cutting technique Limbing Safe distance Tree felling techniqueFelling direction Clearing the trunk and preparing your retreat Felling cut Directional cuts Freeing a tree that has fallen badly General adviceFreeing a trapped tree Cutting trees and branches that are in tension Cutting the trunk into logs How to avoid kickbackWhat is kickback? General MaintenanceCarburetor adjustment Checking brake band wear Correctly adjusted carburetorChecking the front hand guard Checking the inertia brake release Throttle lockout Changing a broken or worn starter cord MufﬂerStarter Tensioning the recoil spring Air ﬁlterChanging a broken recoil spring Fitting the starter Spark plug Adjustment of the oil pumpLubricating the bar tip sprocket Needle bearing lubrication Temperature 0C 32F or colder Air Injection centrifugal cleaningTemperature -5C 23F or colder Winter use Daily maintenance Weekly maintenance Monthly maintenance Maintenance schedule Technical data Technical Data Saw chain ﬁling and ﬁle gauges Bar and chain combinations Consequential Damages Husqvarna Forest Federal Emission Control Warranty StatementRepair or Replacement of Parts Repair or Safety precautions for chain saw users American Standard Safety PrecautionsKickback safety precautions Other safety precautions 1150902-95