Husqvarna 115 13 82-95 manual Freeing a tree that has fallen badly, Freeing a trapped tree

Page 30

WORKING TECHNIQUES

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

Portable

Cutting trees and branches that are in tension

Preparations: Work out which side is in tension and where the point of maximum tension is (i.e. where it would break if it was bent even more).

Decide which is the safest way to release the tension and whether you are able to do it safely. In complicated situations the only safe method is to put aside your chain saw and use a winch.

General advice:

Position yourself so that you will be clear of the tree or branch when the tension is released.

Make one or more cuts at or near the point of maximum tension. Make as many cuts of sufficient depth as necessary to reduce the tension and make the tree or branch break at the point of maximum tension.

Never cut straight through a tree or branch that is in tension!

If you must cut across tree/limb, make two to three cuts, one inch apart, one to two inches deep.

Continue to cut deeper until tree/limb bends and tension is released.

30 – English

115 13 82-95 Rev.2 2009-03-23

Image 30
Contents 455e Rancher Rancher 460 Rancher KEY to Symbols Symbols on the machineSymbols in the operator’s manual You will find the following labels on your chain saw EPAContents 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 115 13 82-95 Rev.2 English Right hand guard Throttle lockoutChain catcher Vibration damping systemMuffler Stop switchCutting equipment General rulesCutting equipment designed to reduce kickback BarChain Sharpening your chain and adjusting depth gauge setting General information on sharpening cutting teethTensioning the chain Lubricating cutting equipment 455e RancherFilling with chain oil Needle bearing lubrication Checking chain lubricationChain drive sprocket Checking wear on cutting equipmentBar Rancher, 460 Rancher AssemblyFitting the bar and chain 455e RancherAssembly Fuel Handling FuelTransport and storage Fuel safetyFueling Long-term storageCold engine Starting and StoppingStarting and stopping Warm engineStopping Before use Basic safety rulesWorking Techniques General working instructionsGeneral rules Basic cutting technique TermsLimbing Felling direction Tree felling techniqueSafe distance Clearing the trunk and preparing your retreatDirectional cuts Felling cutFreeing a trapped tree General adviceFreeing a tree that has fallen badly Cutting trees and branches that are in tensionHow to avoid kickback What is kickback?Cutting the trunk into logs Maintenance Carburetor adjustmentGeneral Checking the front hand guard Correctly adjusted carburetorChecking brake band wear Checking the inertia brake releaseThrottle lockout Muffler StarterChanging a broken or worn starter cord Changing a broken recoil spring Air filterTensioning the recoil spring Fitting the starterSpark plug Adjustment of the oil pumpWhen making adjustments Lubricating the bar tip sprocketTemperature -5C 23F or colder Air Injection centrifugal cleaningTemperature 0C 32F or colder Cooling systemMaintenance schedule Daily maintenance Weekly maintenance Monthly maintenanceTechnical Data Technical dataBar Chain Bar and chain combinationsSaw chain filing and file gauges Pitch, inchFederal Emission Control Warranty Statement Repair or Replacement of Parts Repair orKickback safety precautions American Standard Safety PrecautionsSafety precautions for chain saw users Other safety precautions1151382-95