Jonsered CS 2171WH manual Cutting, Limbing

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SAFETY INSTRUCTIONS

Two factors decide whether the chain will jam or the object that you are cutting will split: the ﬁrst is how the object is supported before and after cutting, and the second is whether it is in tension.

In most cases you can avoid these problems by cutting in two stages; from the top and from the bottom.You need to support the object so that it will not trap the chain or split during cutting.

WARNING! If the chain jams in the cut: stop

!the engine! Don’t try to pull the chain saw free. If you do you may be injured by the chain when the chain saw suddenly breaks free. Use a lever to open up the cut and free the chain saw.

The following instructions describe how to handle the commonest situations you are likely to encounter when using a chain saw.

Cutting

The log is lying on the ground. There is little risk of the chain jamming or the object splitting. However there is a risk that the chain will touch the ground when you ﬁnish the cut.

Cut all the way through the log from above. Avoid letting the chain touch the ground as you ﬁnish the cut. Maintain full throttle but be prepared for what might happen.

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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Contents Operator´s manual Key to symbols KEY to SymbolsContents Machine′s safety equipment Safety InstructionsPersonal protective equipment Chain brake and front hand guard Right hand guard Stop switchThrottle lock Chain catcherChecking the inertia brake release MufﬂerChecking brake band wear Checking the front hand guardRight hand guard Stop switchThrottle lock Chain catcherMufﬂer Cutting equipmentGeneral rules Cutting equipment designed to minimise kickbackGeneral information on sharpening cutting teeth Sharpening your chain and adjusting raker clearanceChain Some terms that describe the bar and chainSharpening cutting teeth If the raker clearance is too large General advice on setting raker clearanceSetting the raker clearance Tensioning the chainLubricating cutting equipment Chain drive sprocket How to avoid kickbackWhat is kickback? Checking wear on cutting equipmentDo not let go of the handles Starting General safety precautionsTransport and storage Fuel safetyBasic safety rules General working instructionsGeneral Basic cutting techniqueTerms Limbing CuttingClearing the trunk and preparing your retreat Tree felling techniqueSafe distance Felling directionFelling cut Cutting the trunk into logsCutting 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 bumperTwo-stroke oil Fuel HandlingFuel PetrolFuelling Chain oilMin 3 m 10ft Warm engine Starting and StoppingStarting and stopping Cold engineStopping Carburettor adjustment MaintenanceCarburettor with movement limiters Low speed jet L Fine adjustment of the idle speed TCorrectly adjusted carburettor Carburettor without movement limitersIdle speed, rpm Recommended engine speeds are as followsAir ﬁlter StarterMufﬂer Adjustment of the oil pumpWhen making adjustments Spark plugElectrical carburettor heating Centrifugal cleaning TurboCooling system Heated handlesMonthly 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¨