Jonsered CS 2147 manual How to avoid kickback, What is kickback?, Do not let go of the handles

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SAFETY INSTRUCTIONS

WARNING! Most chain saw accidents

!happen when the chain touches the operator.

Wear personal protective equipment. See instructions under the heading Personal protective equipment.

Do not tackle any job that you feel you are not adequately trained for. See instructions under the headings Personal protective equipment, How to avoid kickback, Cutting equipment and General working instructions.

Avoid situations where there is a risk of

kickback. See instructions under the heading Machines safety equipment.

Use the recommended protective equipment and check its condition. See instructions under the heading General working instructions.

Check that all the chain saw safety features are working. See instructions under the headings General working instructions and General safety precautions.

How to avoid kickback

WARNING! Kickback can happen very

!suddenly and violently; kicking the chain saw, bar and chain back at the user. If this happens when the chain is moving it can cause very serious, even fatal injuries. It is vital you understand what causes kickback and that you can avoid it by taking care and using the right working technique.

What is kickback?

The word kickback is used to describe the sudden reaction that causes the chain saw and bar to jump off an object when the upper quadrant of the tip of the bar, known as the kickback zone, touches an object.

Kickback always occurs in the cutting plane of the bar. Normally the chain saw and bar are thrown backwards and upwards towards the user. However, the chain saw may move in a different direction depending on the way it was being used when the kickback zone of the bar touched the object.

Kickback only occurs if the kickback zone of the bar touches an object.

General rules

1If you understand what kickback is and how it happens then you can reduce or eliminate the element of surprise. By being prepared you reduce the risk. Kickback is usually quite mild, but it can sometimes be very sudden and violent.

2Always hold the chain saw firmly with your right hand on the rear handle and your left hand on the front handle. Wrap your fingers and thumbs around the handles. You should use this grip whether you are right-handed or left- handed. This grip minimises the effect of kickback and lets you keep the chain saw under control.

Do not let go of the handles!

3Most kickback accidents happen during limbing. Make sure you are standing firmly and that there is nothing in the way that might make you trip or lose your balance.

Lack of concentration can lead to kickback if the kickback zone of the bar accidentally touches a branch, nearby tree or some other object.

4Never use the chain saw above shoulder height and try not to cut with the tip of the bar. Never use the chain saw one-handed!

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Contents Operator′s manual Key to symbols KEY to SymbolsContents Safety Instructions Machine′s safety equipmentPersonal protective equipment Chain brake and hand guard Right hand guard Stop switchThrottle lock Chain catcherMuffler Checking brake band wearChecking the hand guard Chain catcher Checking the inertia brake releaseChecking the brake trigger Throttle lockVibration damping system Stop switchCutting equipment General rulesSome terms that describe the bar and chain Cutting equipment designed to minimise kickbackBar ChainSharpening your chain and adjusting raker clearance General information on sharpening cutting teethWith a badly sharpened chain Sharpening cutting teeth General advice on setting raker clearanceSetting the raker clearance Tensioning the chainChecking chain lubrication Lubricating cutting equipmentChain oil Filling with chain oilChain drive sprocket Lubricating the bar tip sprocketNeedle bearing lubrication Checking wear on cutting equipmentHow to avoid kickback What is kickback?Do not let go of the handles General safety precautions Starting Fuel safetyBasic safety rules General working instructionsTransport and storage Cutting Basic cutting techniqueGeneral TermsFelling direction Tree felling techniqueLimbing Safe distanceFelling cut Clearing the trunk and preparing your retreatFelling Directional cutsCutting the trunk into logs Cutting trees and branches that are in tension General adviceFreeing a tree that has fallen badly Freeing a trapped treeWhat is what on the chain saw? What is WHAT?Working with the chain AssemblyFitting the bar and chain Fitting a spike bumperFuel Handling FuelFollowing applies to chain saws with catalytic converters Fuelling Chain oilWarm engine Starting and StoppingStarting and stopping Cold engineStopping Carburettor MaintenanceHigh speed jet H Fine adjustment of the idle speed TCorrectly adjusted carburettor StarterChanging a broken recoil spring Air filterSpark plug Tensioning the recoil springNeedle bearing lubrication Adjustment of the oil pumpWhen making adjustments MufflerWinter use Centrifugal cleaning TurboHeated handles CS 2147W, CS 2152W Electrical carburettor heating CS 2147WH, CS 2152WHBelow you will find some general maintenance instructions Daily maintenanceWeekly maintenance Monthly maintenanceTechnical data Technical DataBar and chain combinations EC-declaration of conformity Applies to Europe onlyCispr 121997, EN608 Page 1088890-26