Jonsered CS 2147 manual Tree felling technique, Limbing, Safe distance, Felling direction

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SAFETY INSTRUCTIONS

If it is possible (can you turn the log?) stop cutting about 2/3 of the way through the log.

Turn the log and ﬁnish the cut from the opposite side.

The log is supported at one end. There is a high risk that it will split.

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

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

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.

Limbing

When limbing thick branches you should use the same approach as for cutting.

Cut difﬁcult branches piece by piece.

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Tree felling technique

WARNING! It takes a lot of experience to fell

!a tree. Inexperienced users of chain saws should not fell trees. Do not attempt any task that you feel unsure of!

Safe distance

The safe distance between a tree that is to be felled and anyone else working nearby is at least 21/2 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 on ground where you can stand and move about safely.The main point to avoid is letting the tree fall onto another tree. See instructions under the heading Freeing a tree that has fallen badly.

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

20 – English

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Contents Operator′s manual KEY to Symbols Key to symbolsContents Personal protective equipment Safety InstructionsMachine′s safety equipment Chain brake and hand guard Stop switch Throttle lockChain catcher Right hand guardChecking the hand guard MufﬂerChecking brake band wear Checking the inertia brake release Checking the brake triggerThrottle lock Chain catcherStop switch Cutting equipmentGeneral rules Vibration damping systemCutting equipment designed to minimise kickback BarChain Some terms that describe the bar and chainWith a badly sharpened chain Sharpening your chain and adjusting raker clearanceGeneral information on sharpening cutting teeth General advice on setting raker clearance Setting the raker clearanceTensioning the chain Sharpening cutting teethLubricating cutting equipment Chain oilFilling with chain oil Checking chain lubricationLubricating the bar tip sprocket Needle bearing lubricationChecking wear on cutting equipment Chain drive sprocketDo not let go of the handles How to avoid kickbackWhat is kickback? General safety precautions Fuel safety StartingTransport and storage Basic safety rulesGeneral working instructions Basic cutting technique GeneralTerms CuttingTree felling technique LimbingSafe distance Felling directionClearing the trunk and preparing your retreat FellingDirectional cuts Felling cutCutting the trunk into logs General advice Freeing a tree that has fallen badlyFreeing a trapped tree Cutting trees and branches that are in tensionWhat is WHAT? What is what on the chain saw?Assembly Fitting the bar and chainFitting a spike bumper Working with the chainFollowing applies to chain saws with catalytic converters Fuel HandlingFuel Chain oil FuellingStarting and Stopping Starting and stoppingCold engine Warm engineStopping Maintenance CarburettorFine adjustment of the idle speed T Correctly adjusted carburettorStarter High speed jet HAir ﬁlter Spark plugTensioning the recoil spring Changing a broken recoil springAdjustment of the oil pump When making adjustmentsMufﬂer Needle bearing lubricationCentrifugal cleaning Turbo Heated handles CS 2147W, CS 2152WElectrical carburettor heating CS 2147WH, CS 2152WH Winter useDaily maintenance Weekly maintenanceMonthly maintenance Below you will ﬁnd some general maintenance instructionsTechnical Data Technical dataBar and chain combinations Cispr 121997, EN608 EC-declaration of conformityApplies to Europe only Page 1088890-26