Jonsered CS 2171WH Freeing a tree that has fallen badly, Freeing a trapped tree, General advice

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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!

22 – English

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Contents Operator´s manual KEY to Symbols Key to symbolsContents Machine′s safety equipment Safety InstructionsPersonal protective equipment Chain brake and front hand guard Chain catcher Stop switchThrottle lock Right hand guardChecking the front hand guard MufﬂerChecking brake band wear Checking the inertia brake releaseChain catcher Stop switchThrottle lock Right hand guardCutting equipment designed to minimise kickback Cutting equipmentGeneral rules MufﬂerSome terms that describe the bar and chain Sharpening your chain and adjusting raker clearanceChain General information on sharpening cutting teethSharpening cutting teeth Tensioning the chain General advice on setting raker clearanceSetting the raker clearance If the raker clearance is too largeLubricating cutting equipment Checking wear on cutting equipment How to avoid kickbackWhat is kickback? Chain drive sprocketDo not let go of the handles General safety precautions StartingGeneral working instructions Fuel safetyBasic safety rules Transport and storageGeneral Basic cutting techniqueTerms Cutting LimbingFelling direction Tree felling techniqueSafe distance Clearing the trunk and preparing your retreatCutting the trunk into logs Felling cutFreeing a trapped tree General adviceFreeing a tree that has fallen badly Cutting trees and branches that are in tensionWhat is WHAT? What is what on the chain saw?Fitting a spike bumper AssemblyFitting the bar and chain Working with the chainPetrol Fuel HandlingFuel Two-stroke oilFuelling Chain oilMin 3 m 10ft Cold engine Starting and StoppingStarting and stopping Warm engineStopping Carburettor adjustment MaintenanceCarburettor with movement limiters Carburettor without movement limiters Fine adjustment of the idle speed TCorrectly adjusted carburettor Low speed jet LRecommended engine speeds are as follows Idle speed, rpmStarter Air ﬁlterSpark plug Adjustment of the oil pumpWhen making adjustments MufﬂerHeated handles Centrifugal cleaning TurboCooling system Electrical carburettor heatingMonthly maintenance Daily maintenance Weekly maintenanceBelow you will ﬁnd some general maintenance instructions Technical Data Technical dataBar Chain Bar and chain combinationsLength, inches Pitch, inch Max. number of teeth on Applies to Europe only EC-declaration of conformityEN292-2, Cispr 121997, EN608 Page 1088935-26 ´z*xT¶6U¨ ´z*xT¶6U¨