Husqvarna 570, 575XP manual Tree felling technique, Safe distance, Felling direction

Page 25

WORKING TECHNIQUES

The log is supported at both ends. There is a high risk that the chain will jam.

Start by cutting from above (about 1/3 of the way through).

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.

English – 25

Image 25

Contents 570 575XP Key to symbols KEY to SymbolsYou will ﬁnd the following labels on your chain saw Contents Dear customer IntroductionWhat is what on the chain saw? What is WHAT?Before using a new chain saw General Safety PrecautionsAlways use common sense Personal protective equipment Machine′s safety equipmentChain brake and front hand guard General Safety Precautions Chain catcher Throttle lockRight hand guard Vibration damping systemCutting equipment Stop switchMufﬂer General rulesBar Cutting equipment designed to reduce kickbackChain Some terms that describe the bar and chainGeneral information on sharpening cutting teeth Sharpening your chain and adjusting depth gauge settingSharpening cutting teeth Instructions considerably increases the risk of kickbackAdjustment of depth gauge setting General advice on adjusting depth gauge settingIf the depth gauge setting is too large Tensioning the chainChain oil Lubricating cutting equipmentFilling with chain oil Checking chain lubricationChecking wear on cutting equipment Needle bearing lubricationFitting the bar and chain AssemblyFuel Fuel HandlingFueling Fuel safetyTransport and storage Long-term storageStarting and stopping Starting and StoppingCold engine Warm engineStopping Working Techniques Basic safety rulesBefore use General working instructions General rules General Basic cutting techniqueTerms Cutting LimbingSafe distance Tree felling techniqueFelling direction Clearing the trunk and preparing your retreatDirectional cuts FellingFelling cut Freeing a trapped tree Freeing a tree that has fallen badlyWhat is kickback? How to avoid kickbackGeneral advice Cutting trees and branches that are in tensionCutting the trunk into logs Carburetor adjustment MaintenanceGeneral High speed jet H Correctly adjusted carburetorChecking brake band wear Checking the front hand guardChecking the inertia brake release When the bar hits the stump the brake should be appliedChecking the brake trigger Mufﬂer Changing a broken or worn starter cord StarterTensioning the recoil spring Changing a broken recoil springSpark plug Air ﬁlterLubricating the bar tip sprocket Needle bearing lubricationAir Injection centrifugal cleaning Adjustment of the oil pumpWhen making adjustments Cooling systemHeated handles Winter useDaily maintenance Weekly maintenance Monthly maintenance Maintenance scheduleTechnical data Technical DataTechnical Data Your Warranty Rights and Obligations Federal Emission Control Warranty StatementSafety precautions for chain saw users American Standard Safety PrecautionsKickback safety precautions Other safety precautionsPage 1140240-95 ´z+H8¶5m¨ ´z+H8¶5m¨