Husqvarna 1150902-95 manual Tree felling technique, Safe distance, Felling direction

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WORKING TECHNIQUES

Finish by cutting from below so that the two cuts meet.

Tree felling technique

IMPORTANT! It takes a lot of experience to fell a tree. Inexperienced users of chain saws should not fell trees. Do not attempt any task beyond your experience level!

Safe distance

The safe distance between a tree that is to be felled and anyone else working nearby is at least 2 1/2 tree lengths. Make sure that no-one else is in this ”risk zone” before or during felling.

Felling direction

The aim is to fell the tree in a position where you can limb and cross-cut the log as easily as possible. You want it to fall in a location where you can stand and move about safely.

Once you have decided which way you want the tree to fall you must judge which way the tree would fall naturally.

Several factors affect this:

•Lean of the tree

•Bend

•Wind direction

•Arrangement of branches

•Weight of snow

•Obstacles within the reach of the tree: for example, other trees, power lines, roads and buildings.

•Look for signs of damage and rot in the stem, this makes it more probably that the tree will break and start to fall before you expect it to.

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.

The main point to avoid is letting the tree fall onto another tree. It is very dangerous to remove a trapped tree and 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.

Danger

zone

 

 

direction

 

 

Felling

 

 

 

 

 

 

 

 

 

Retreat path

 

Danger

 

Danger

zone

path

zone

 

 

 

 

Retreat

 

 

 

 

 

 

 

28 – English

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Contents 455e Rancher Rancher 460 Rancher Symbols on the machine KEY to SymbolsSymbols in the operator’s manual EPA Contents Introduction Dear customerWhat is WHAT? What is what on the chain saw?General Safety Precautions Before using a new chain sawMachine′s safety equipment Always use common sensePersonal protective equipment Chain brake and front hand guardGeneral Safety Precautions Chain catcher Throttle lockoutRight hand guard Stop switch Cutting equipmentVibration damping system MufflerBar Cutting equipment designed to reduce kickbackChain Sharpening your chain and adjusting depth gauge setting General information on sharpening cutting teethTensioning the chain Lubricating cutting equipment 455e RancherFilling with chain oil Checking chain lubricationNeedle bearing lubrication Chain drive sprocketChecking wear on cutting equipment Bar Assembly Fitting the bar and chainRancher, 460 Rancher 455e RancherAssembly Fuel 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 instructionsGeneral rules Basic cutting technique TermsLimbing Tree felling technique Safe distanceFelling direction Clearing the trunk and preparing your retreatDirectional cuts Felling cutGeneral advice Freeing a tree that has fallen badlyFreeing a trapped tree Cutting trees and branches that are in tensionWhat is kickback? How to avoid kickbackCutting the trunk into logs Carburetor adjustment MaintenanceGeneral Correctly adjusted carburetor Checking brake band wearChecking the front hand guard Checking the inertia brake releaseThrottle lockout Starter MufflerChanging a broken or worn starter cord Air filter Tensioning the recoil springChanging a broken recoil spring Fitting the starterAdjustment of the oil pump Spark plugLubricating the bar tip sprocket Needle bearing lubricationAir Injection centrifugal cleaning Temperature 0C 32F or colderTemperature -5C 23F or colder Winter useMaintenance schedule Daily maintenance Weekly maintenance Monthly maintenanceTechnical Data Technical dataBar and chain combinations Saw chain filing and file gaugesRepair or Replacement of Parts Repair or Federal Emission Control Warranty StatementConsequential Damages Husqvarna Forest American Standard Safety Precautions Safety precautions for chain saw usersKickback safety precautions Other safety precautions1150902-95
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