Freeing a tree that has fallen badly | Jonsered CS 2147 specs

SAFETY INSTRUCTIONS

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.

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!

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Jonsered CS 2147 manual Freeing a tree that has fallen badly, Freeing a trapped tree, General advice

Contents

Operator′s manual Key to symbols KEY to Symbols Contents Personal protective equipment Safety InstructionsMachine′s safety equipment Chain brake and hand guard Right hand guard Stop switchThrottle lock Chain catcher Checking the hand guard MufﬂerChecking brake band wear Chain catcher Checking the inertia brake releaseChecking the brake trigger Throttle lock Vibration damping system Stop switchCutting equipment General rules Some terms that describe the bar and chain Cutting equipment designed to minimise kickbackBar Chain With a badly sharpened chain Sharpening your chain and adjusting raker clearanceGeneral information on sharpening cutting teeth Sharpening cutting teeth General advice on setting raker clearanceSetting the raker clearance Tensioning the chain Checking chain lubrication Lubricating cutting equipmentChain oil Filling with chain oil Chain drive sprocket Lubricating the bar tip sprocketNeedle bearing lubrication Checking wear on cutting equipment Do not let go of the handles How to avoid kickbackWhat is kickback? General safety precautions Starting Fuel safety Transport and storage Basic safety rulesGeneral working instructions Cutting Basic cutting techniqueGeneral Terms Felling direction Tree felling techniqueLimbing Safe distance Felling cut Clearing the trunk and preparing your retreatFelling Directional cuts Cutting the trunk into logs Cutting trees and branches that are in tension General adviceFreeing a tree that has fallen badly Freeing a trapped tree What is what on the chain saw? What is WHAT? Working with the chain AssemblyFitting the bar and chain Fitting a spike bumper Following applies to chain saws with catalytic converters Fuel HandlingFuel Fuelling Chain oil Warm engine Starting and StoppingStarting and stopping Cold engine Stopping Carburettor Maintenance High speed jet H Fine adjustment of the idle speed TCorrectly adjusted carburettor Starter Changing a broken recoil spring Air ﬁlterSpark plug Tensioning the recoil spring Needle bearing lubrication Adjustment of the oil pumpWhen making adjustments Mufﬂer Winter use Centrifugal cleaning TurboHeated handles CS 2147W, CS 2152W Electrical carburettor heating CS 2147WH, CS 2152WH Below you will ﬁnd some general maintenance instructions Daily maintenanceWeekly maintenance Monthly maintenance Technical data Technical Data Bar and chain combinations Cispr 121997, EN608 EC-declaration of conformityApplies to Europe only Page 1088890-26